,System.Func{System.IAsyncResult,--0})} ,System.Func{System.IAsyncResult,--1})} ,System.Func{System.IAsyncResult,--2})} ,System.Func{System.IAsyncResult,--3})} ,System.Func{System.IAsyncResult,--4})} ,System.Func{System.IAsyncResult,--5})} ,System.Func{System.IAsyncResult,--6})} ,System.Func{System.IAsyncResult,--7})} ,System.Func{System.IAsyncResult,--8})} ,System.Func{System.IAsyncResult,--9})} ,System.Func{System.IAsyncResult,--10})} ,System.Func{System.IAsyncResult,--11})} ,System.Func{System.IAsyncResult,--12})} ,System.Func{System.IAsyncResult,--13})} ,System.Func{System.IAsyncResult,--14})} ,System.Action{System.IAsyncResult})} ,System.Action{System.IAsyncResult})} ,System.Action{System.IAsyncResult})} ,System.Action{System.IAsyncResult})} ,System.Action{System.IAsyncResult})} ,System.Action{System.IAsyncResult})} ,System.Action{System.IAsyncResult})} ,System.Action{System.IAsyncResult})} ,System.Action{System.IAsyncResult})} ,System.Action{System.IAsyncResult})} ,System.Action{System.IAsyncResult})} ,System.Action{System.IAsyncResult})} ,System.Action{System.IAsyncResult})} ,System.Action{System.IAsyncResult})} ,System.Action{System.IAsyncResult})}

Observable.FromAsyncPattern(Func, Func) method¶

Defined in

Type: Observable Namespace: System.Reactive.Linq Assembly: System.Reactive.dll

Applies to

netstandard2.0

Overloads¶

1. public static Func<IObservable<TResult>> FromAsyncPattern<TResult>(Func<AsyncCallback, object?, IAsyncResult> begin, Func<IAsyncResult, TResult> end)
2. public static Func<TArg1, IObservable<TResult>> FromAsyncPattern<TArg1, TResult>(Func<TArg1, AsyncCallback, object?, IAsyncResult> begin, Func<IAsyncResult, TResult> end)
3. public static Func<TArg1, TArg2, IObservable<TResult>> FromAsyncPattern<TArg1, TArg2, TResult>(Func<TArg1, TArg2, AsyncCallback, object?, IAsyncResult> begin, Func<IAsyncResult, TResult> end)
4. public static Func<TArg1, TArg2, TArg3, IObservable<TResult>> FromAsyncPattern<TArg1, TArg2, TArg3, TResult>(Func<TArg1, TArg2, TArg3, AsyncCallback, object?, IAsyncResult> begin, Func<IAsyncResult, TResult> end)
5. public static Func<TArg1, TArg2, TArg3, TArg4, IObservable<TResult>> FromAsyncPattern<TArg1, TArg2, TArg3, TArg4, TResult>(Func<TArg1, TArg2, TArg3, TArg4, AsyncCallback, object?, IAsyncResult> begin, Func<IAsyncResult, TResult> end)
6. public static Func<TArg1, TArg2, TArg3, TArg4, TArg5, IObservable<TResult>> FromAsyncPattern<TArg1, TArg2, TArg3, TArg4, TArg5, TResult>(Func<TArg1, TArg2, TArg3, TArg4, TArg5, AsyncCallback, object?, IAsyncResult> begin, Func<IAsyncResult, TResult> end)
7. public static Func<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, IObservable<TResult>> FromAsyncPattern<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TResult>(Func<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, AsyncCallback, object?, IAsyncResult> begin, Func<IAsyncResult, TResult> end)
8. public static Func<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, IObservable<TResult>> FromAsyncPattern<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TResult>(Func<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, AsyncCallback, object?, IAsyncResult> begin, Func<IAsyncResult, TResult> end)
9. public static Func<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TArg8, IObservable<TResult>> FromAsyncPattern<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TArg8, TResult>(Func<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TArg8, AsyncCallback, object?, IAsyncResult> begin, Func<IAsyncResult, TResult> end)
10. public static Func<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TArg8, TArg9, IObservable<TResult>> FromAsyncPattern<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TArg8, TArg9, TResult>(Func<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TArg8, TArg9, AsyncCallback, object?, IAsyncResult> begin, Func<IAsyncResult, TResult> end)
11. public static Func<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TArg8, TArg9, TArg10, IObservable<TResult>> FromAsyncPattern<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TArg8, TArg9, TArg10, TResult>(Func<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TArg8, TArg9, TArg10, AsyncCallback, object?, IAsyncResult> begin, Func<IAsyncResult, TResult> end)
12. public static Func<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TArg8, TArg9, TArg10, TArg11, IObservable<TResult>> FromAsyncPattern<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TArg8, TArg9, TArg10, TArg11, TResult>(Func<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TArg8, TArg9, TArg10, TArg11, AsyncCallback, object?, IAsyncResult> begin, Func<IAsyncResult, TResult> end)
13. public static Func<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TArg8, TArg9, TArg10, TArg11, TArg12, IObservable<TResult>> FromAsyncPattern<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TArg8, TArg9, TArg10, TArg11, TArg12, TResult>(Func<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TArg8, TArg9, TArg10, TArg11, TArg12, AsyncCallback, object?, IAsyncResult> begin, Func<IAsyncResult, TResult> end)
14. public static Func<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TArg8, TArg9, TArg10, TArg11, TArg12, TArg13, IObservable<TResult>> FromAsyncPattern<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TArg8, TArg9, TArg10, TArg11, TArg12, TArg13, TResult>(Func<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TArg8, TArg9, TArg10, TArg11, TArg12, TArg13, AsyncCallback, object?, IAsyncResult> begin, Func<IAsyncResult, TResult> end)
15. public static Func<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TArg8, TArg9, TArg10, TArg11, TArg12, TArg13, TArg14, IObservable<TResult>> FromAsyncPattern<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TArg8, TArg9, TArg10, TArg11, TArg12, TArg13, TArg14, TResult>(Func<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TArg8, TArg9, TArg10, TArg11, TArg12, TArg13, TArg14, AsyncCallback, object?, IAsyncResult> begin, Func<IAsyncResult, TResult> end)
16. public static Func<IObservable<Unit>> FromAsyncPattern(Func<AsyncCallback, object?, IAsyncResult> begin, Action<IAsyncResult> end)
17. public static Func<TArg1, IObservable<Unit>> FromAsyncPattern<TArg1>(Func<TArg1, AsyncCallback, object?, IAsyncResult> begin, Action<IAsyncResult> end)
18. public static Func<TArg1, TArg2, IObservable<Unit>> FromAsyncPattern<TArg1, TArg2>(Func<TArg1, TArg2, AsyncCallback, object?, IAsyncResult> begin, Action<IAsyncResult> end)
19. public static Func<TArg1, TArg2, TArg3, IObservable<Unit>> FromAsyncPattern<TArg1, TArg2, TArg3>(Func<TArg1, TArg2, TArg3, AsyncCallback, object?, IAsyncResult> begin, Action<IAsyncResult> end)
20. public static Func<TArg1, TArg2, TArg3, TArg4, IObservable<Unit>> FromAsyncPattern<TArg1, TArg2, TArg3, TArg4>(Func<TArg1, TArg2, TArg3, TArg4, AsyncCallback, object?, IAsyncResult> begin, Action<IAsyncResult> end)
21. public static Func<TArg1, TArg2, TArg3, TArg4, TArg5, IObservable<Unit>> FromAsyncPattern<TArg1, TArg2, TArg3, TArg4, TArg5>(Func<TArg1, TArg2, TArg3, TArg4, TArg5, AsyncCallback, object?, IAsyncResult> begin, Action<IAsyncResult> end)
22. public static Func<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, IObservable<Unit>> FromAsyncPattern<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6>(Func<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, AsyncCallback, object?, IAsyncResult> begin, Action<IAsyncResult> end)
23. public static Func<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, IObservable<Unit>> FromAsyncPattern<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7>(Func<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, AsyncCallback, object?, IAsyncResult> begin, Action<IAsyncResult> end)
24. public static Func<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TArg8, IObservable<Unit>> FromAsyncPattern<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TArg8>(Func<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TArg8, AsyncCallback, object?, IAsyncResult> begin, Action<IAsyncResult> end)
25. public static Func<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TArg8, TArg9, IObservable<Unit>> FromAsyncPattern<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TArg8, TArg9>(Func<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TArg8, TArg9, AsyncCallback, object?, IAsyncResult> begin, Action<IAsyncResult> end)
26. public static Func<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TArg8, TArg9, TArg10, IObservable<Unit>> FromAsyncPattern<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TArg8, TArg9, TArg10>(Func<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TArg8, TArg9, TArg10, AsyncCallback, object?, IAsyncResult> begin, Action<IAsyncResult> end)
27. public static Func<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TArg8, TArg9, TArg10, TArg11, IObservable<Unit>> FromAsyncPattern<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TArg8, TArg9, TArg10, TArg11>(Func<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TArg8, TArg9, TArg10, TArg11, AsyncCallback, object?, IAsyncResult> begin, Action<IAsyncResult> end)
28. public static Func<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TArg8, TArg9, TArg10, TArg11, TArg12, IObservable<Unit>> FromAsyncPattern<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TArg8, TArg9, TArg10, TArg11, TArg12>(Func<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TArg8, TArg9, TArg10, TArg11, TArg12, AsyncCallback, object?, IAsyncResult> begin, Action<IAsyncResult> end)
29. public static Func<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TArg8, TArg9, TArg10, TArg11, TArg12, TArg13, IObservable<Unit>> FromAsyncPattern<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TArg8, TArg9, TArg10, TArg11, TArg12, TArg13>(Func<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TArg8, TArg9, TArg10, TArg11, TArg12, TArg13, AsyncCallback, object?, IAsyncResult> begin, Action<IAsyncResult> end)
30. public static Func<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TArg8, TArg9, TArg10, TArg11, TArg12, TArg13, TArg14, IObservable<Unit>> FromAsyncPattern<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TArg8, TArg9, TArg10, TArg11, TArg12, TArg13, TArg14>(Func<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TArg8, TArg9, TArg10, TArg11, TArg12, TArg13, TArg14, AsyncCallback, object?, IAsyncResult> begin, Action<IAsyncResult> end)

1. Overload¶

Deprecated

This conversion is no longer supported. Replace use of the Begin/End asynchronous method pair with a new Task-based async method, and convert the result using ToObservable. If no Task-based async method is available, use Task.Factory.FromAsync to obtain a Task object.

Attributes: [Obsolete("This conversion is no longer supported. Replace use of the Begin/End asynchronous method pair with a new Task-based async method, and convert the result using ToObservable. If no Task-based async method is available, use Task.Factory.FromAsync to obtain a Task object.")]

public static Func<IObservable<TResult>> FromAsyncPattern<TResult>(Func<AsyncCallback, object?, IAsyncResult> begin, Func<IAsyncResult, TResult> end)

Summary: Converts a Begin/End invoke function pair into an asynchronous function.

Type parameters

Name	Description
`TResult`	The type of the result returned by the end delegate.

Parameters

Name	Type	Description
`begin`	Func	The delegate that begins the asynchronous operation.
`end`	Func	The delegate that ends the asynchronous operation.

Returns: Func> -- Function that can be used to start the asynchronous operation and retrieve the result as an observable sequence.

Remarks

Each invocation of the resulting function will cause the asynchronous operation to be started. Subscription to the resulting sequence has no observable side-effect, and each subscription will produce the asynchronous operation's result.

Exceptions

Type	Condition
System.ArgumentNullException	`begin` or `end` is null.

2. Overload¶

Deprecated

This conversion is no longer supported. Replace use of the Begin/End asynchronous method pair with a new Task-based async method, and convert the result using ToObservable. If no Task-based async method is available, use Task.Factory.FromAsync to obtain a Task object.

Attributes: [Obsolete("This conversion is no longer supported. Replace use of the Begin/End asynchronous method pair with a new Task-based async method, and convert the result using ToObservable. If no Task-based async method is available, use Task.Factory.FromAsync to obtain a Task object.")]

public static Func<TArg1, IObservable<TResult>> FromAsyncPattern<TArg1, TResult>(Func<TArg1, AsyncCallback, object?, IAsyncResult> begin, Func<IAsyncResult, TResult> end)

Summary: Converts a Begin/End invoke function pair into an asynchronous function.

Type parameters

Name	Description
`TArg1`	The type of the first argument passed to the begin delegate.
`TResult`	The type of the result returned by the end delegate.

Parameters

Name	Type	Description
`begin`	Func	The delegate that begins the asynchronous operation.
`end`	Func	The delegate that ends the asynchronous operation.

Returns: Func> -- Function that can be used to start the asynchronous operation and retrieve the result as an observable sequence.

Remarks

Each invocation of the resulting function will cause the asynchronous operation to be started. Subscription to the resulting sequence has no observable side-effect, and each subscription will produce the asynchronous operation's result.

Exceptions

Type	Condition
System.ArgumentNullException	`begin` or `end` is null.

3. Overload¶

Deprecated

This conversion is no longer supported. Replace use of the Begin/End asynchronous method pair with a new Task-based async method, and convert the result using ToObservable. If no Task-based async method is available, use Task.Factory.FromAsync to obtain a Task object.

Attributes: [Obsolete("This conversion is no longer supported. Replace use of the Begin/End asynchronous method pair with a new Task-based async method, and convert the result using ToObservable. If no Task-based async method is available, use Task.Factory.FromAsync to obtain a Task object.")]

public static Func<TArg1, TArg2, IObservable<TResult>> FromAsyncPattern<TArg1, TArg2, TResult>(Func<TArg1, TArg2, AsyncCallback, object?, IAsyncResult> begin, Func<IAsyncResult, TResult> end)

Summary: Converts a Begin/End invoke function pair into an asynchronous function.

Type parameters

Name	Description
`TArg1`	The type of the first argument passed to the begin delegate.
`TArg2`	The type of the second argument passed to the begin delegate.
`TResult`	The type of the result returned by the end delegate.

Parameters

Name	Type	Description
`begin`	Func	The delegate that begins the asynchronous operation.
`end`	Func	The delegate that ends the asynchronous operation.

Returns: Func> -- Function that can be used to start the asynchronous operation and retrieve the result as an observable sequence.

Remarks

Each invocation of the resulting function will cause the asynchronous operation to be started. Subscription to the resulting sequence has no observable side-effect, and each subscription will produce the asynchronous operation's result.

Exceptions

Type	Condition
System.ArgumentNullException	`begin` or `end` is null.

4. Overload¶

Deprecated

This conversion is no longer supported. Replace use of the Begin/End asynchronous method pair with a new Task-based async method, and convert the result using ToObservable. If no Task-based async method is available, use Task.Factory.FromAsync to obtain a Task object.

Attributes: [Obsolete("This conversion is no longer supported. Replace use of the Begin/End asynchronous method pair with a new Task-based async method, and convert the result using ToObservable. If no Task-based async method is available, use Task.Factory.FromAsync to obtain a Task object.")]

public static Func<TArg1, TArg2, TArg3, IObservable<TResult>> FromAsyncPattern<TArg1, TArg2, TArg3, TResult>(Func<TArg1, TArg2, TArg3, AsyncCallback, object?, IAsyncResult> begin, Func<IAsyncResult, TResult> end)

Summary: Converts a Begin/End invoke function pair into an asynchronous function.

Type parameters

Name	Description
`TArg1`	The type of the first argument passed to the begin delegate.
`TArg2`	The type of the second argument passed to the begin delegate.
`TArg3`	The type of the third argument passed to the begin delegate.
`TResult`	The type of the result returned by the end delegate.

Parameters

Name	Type	Description
`begin`	Func	The delegate that begins the asynchronous operation.
`end`	Func	The delegate that ends the asynchronous operation.

Returns: Func> -- Function that can be used to start the asynchronous operation and retrieve the result as an observable sequence.

Remarks

Each invocation of the resulting function will cause the asynchronous operation to be started. Subscription to the resulting sequence has no observable side-effect, and each subscription will produce the asynchronous operation's result.

Exceptions

Type	Condition
System.ArgumentNullException	`begin` or `end` is null.

5. Overload¶

Deprecated

This conversion is no longer supported. Replace use of the Begin/End asynchronous method pair with a new Task-based async method, and convert the result using ToObservable. If no Task-based async method is available, use Task.Factory.FromAsync to obtain a Task object.

Attributes: [Obsolete("This conversion is no longer supported. Replace use of the Begin/End asynchronous method pair with a new Task-based async method, and convert the result using ToObservable. If no Task-based async method is available, use Task.Factory.FromAsync to obtain a Task object.")]

public static Func<TArg1, TArg2, TArg3, TArg4, IObservable<TResult>> FromAsyncPattern<TArg1, TArg2, TArg3, TArg4, TResult>(Func<TArg1, TArg2, TArg3, TArg4, AsyncCallback, object?, IAsyncResult> begin, Func<IAsyncResult, TResult> end)

Summary: Converts a Begin/End invoke function pair into an asynchronous function.

Type parameters

Name	Description
`TArg1`	The type of the first argument passed to the begin delegate.
`TArg2`	The type of the second argument passed to the begin delegate.
`TArg3`	The type of the third argument passed to the begin delegate.
`TArg4`	The type of the fourth argument passed to the begin delegate.
`TResult`	The type of the result returned by the end delegate.

Parameters

Name	Type	Description
`begin`	Func	The delegate that begins the asynchronous operation.
`end`	Func	The delegate that ends the asynchronous operation.

Returns: Func> -- Function that can be used to start the asynchronous operation and retrieve the result as an observable sequence.

Remarks

Each invocation of the resulting function will cause the asynchronous operation to be started. Subscription to the resulting sequence has no observable side-effect, and each subscription will produce the asynchronous operation's result.

Exceptions

Type	Condition
System.ArgumentNullException	`begin` or `end` is null.

6. Overload¶

Deprecated

This conversion is no longer supported. Replace use of the Begin/End asynchronous method pair with a new Task-based async method, and convert the result using ToObservable. If no Task-based async method is available, use Task.Factory.FromAsync to obtain a Task object.

Attributes: [Obsolete("This conversion is no longer supported. Replace use of the Begin/End asynchronous method pair with a new Task-based async method, and convert the result using ToObservable. If no Task-based async method is available, use Task.Factory.FromAsync to obtain a Task object.")]

public static Func<TArg1, TArg2, TArg3, TArg4, TArg5, IObservable<TResult>> FromAsyncPattern<TArg1, TArg2, TArg3, TArg4, TArg5, TResult>(Func<TArg1, TArg2, TArg3, TArg4, TArg5, AsyncCallback, object?, IAsyncResult> begin, Func<IAsyncResult, TResult> end)

Summary: Converts a Begin/End invoke function pair into an asynchronous function.

Type parameters

Name	Description
`TArg1`	The type of the first argument passed to the begin delegate.
`TArg2`	The type of the second argument passed to the begin delegate.
`TArg3`	The type of the third argument passed to the begin delegate.
`TArg4`	The type of the fourth argument passed to the begin delegate.
`TArg5`	The type of the fifth argument passed to the begin delegate.
`TResult`	The type of the result returned by the end delegate.

Parameters

Name	Type	Description
`begin`	Func	The delegate that begins the asynchronous operation.
`end`	Func	The delegate that ends the asynchronous operation.

Returns: Func> -- Function that can be used to start the asynchronous operation and retrieve the result as an observable sequence.

Remarks

Each invocation of the resulting function will cause the asynchronous operation to be started. Subscription to the resulting sequence has no observable side-effect, and each subscription will produce the asynchronous operation's result.

Exceptions

Type	Condition
System.ArgumentNullException	`begin` or `end` is null.

7. Overload¶

Deprecated

This conversion is no longer supported. Replace use of the Begin/End asynchronous method pair with a new Task-based async method, and convert the result using ToObservable. If no Task-based async method is available, use Task.Factory.FromAsync to obtain a Task object.

Attributes: [Obsolete("This conversion is no longer supported. Replace use of the Begin/End asynchronous method pair with a new Task-based async method, and convert the result using ToObservable. If no Task-based async method is available, use Task.Factory.FromAsync to obtain a Task object.")]

public static Func<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, IObservable<TResult>> FromAsyncPattern<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TResult>(Func<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, AsyncCallback, object?, IAsyncResult> begin, Func<IAsyncResult, TResult> end)

Summary: Converts a Begin/End invoke function pair into an asynchronous function.

Type parameters

Name	Description
`TArg1`	The type of the first argument passed to the begin delegate.
`TArg2`	The type of the second argument passed to the begin delegate.
`TArg3`	The type of the third argument passed to the begin delegate.
`TArg4`	The type of the fourth argument passed to the begin delegate.
`TArg5`	The type of the fifth argument passed to the begin delegate.
`TArg6`	The type of the sixth argument passed to the begin delegate.
`TResult`	The type of the result returned by the end delegate.

Parameters

Name	Type	Description
`begin`	Func	The delegate that begins the asynchronous operation.
`end`	Func	The delegate that ends the asynchronous operation.

Returns: Func> -- Function that can be used to start the asynchronous operation and retrieve the result as an observable sequence.

Remarks

Each invocation of the resulting function will cause the asynchronous operation to be started. Subscription to the resulting sequence has no observable side-effect, and each subscription will produce the asynchronous operation's result.

Exceptions

Type	Condition
System.ArgumentNullException	`begin` or `end` is null.

8. Overload¶

Deprecated

This conversion is no longer supported. Replace use of the Begin/End asynchronous method pair with a new Task-based async method, and convert the result using ToObservable. If no Task-based async method is available, use Task.Factory.FromAsync to obtain a Task object.

Attributes: [Obsolete("This conversion is no longer supported. Replace use of the Begin/End asynchronous method pair with a new Task-based async method, and convert the result using ToObservable. If no Task-based async method is available, use Task.Factory.FromAsync to obtain a Task object.")]

public static Func<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, IObservable<TResult>> FromAsyncPattern<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TResult>(Func<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, AsyncCallback, object?, IAsyncResult> begin, Func<IAsyncResult, TResult> end)

Summary: Converts a Begin/End invoke function pair into an asynchronous function.

Type parameters

Name	Description
`TArg1`	The type of the first argument passed to the begin delegate.
`TArg2`	The type of the second argument passed to the begin delegate.
`TArg3`	The type of the third argument passed to the begin delegate.
`TArg4`	The type of the fourth argument passed to the begin delegate.
`TArg5`	The type of the fifth argument passed to the begin delegate.
`TArg6`	The type of the sixth argument passed to the begin delegate.
`TArg7`	The type of the seventh argument passed to the begin delegate.
`TResult`	The type of the result returned by the end delegate.

Parameters

Name	Type	Description
`begin`	Func	The delegate that begins the asynchronous operation.
`end`	Func	The delegate that ends the asynchronous operation.

Returns: Func> -- Function that can be used to start the asynchronous operation and retrieve the result as an observable sequence.

Remarks

Each invocation of the resulting function will cause the asynchronous operation to be started. Subscription to the resulting sequence has no observable side-effect, and each subscription will produce the asynchronous operation's result.

Exceptions

Type	Condition
System.ArgumentNullException	`begin` or `end` is null.

9. Overload¶

Deprecated

This conversion is no longer supported. Replace use of the Begin/End asynchronous method pair with a new Task-based async method, and convert the result using ToObservable. If no Task-based async method is available, use Task.Factory.FromAsync to obtain a Task object.

Attributes: [Obsolete("This conversion is no longer supported. Replace use of the Begin/End asynchronous method pair with a new Task-based async method, and convert the result using ToObservable. If no Task-based async method is available, use Task.Factory.FromAsync to obtain a Task object.")]

public static Func<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TArg8, IObservable<TResult>> FromAsyncPattern<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TArg8, TResult>(Func<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TArg8, AsyncCallback, object?, IAsyncResult> begin, Func<IAsyncResult, TResult> end)

Summary: Converts a Begin/End invoke function pair into an asynchronous function.

Type parameters

Name	Description
`TArg1`	The type of the first argument passed to the begin delegate.
`TArg2`	The type of the second argument passed to the begin delegate.
`TArg3`	The type of the third argument passed to the begin delegate.
`TArg4`	The type of the fourth argument passed to the begin delegate.
`TArg5`	The type of the fifth argument passed to the begin delegate.
`TArg6`	The type of the sixth argument passed to the begin delegate.
`TArg7`	The type of the seventh argument passed to the begin delegate.
`TArg8`	The type of the eighth argument passed to the begin delegate.
`TResult`	The type of the result returned by the end delegate.

Parameters

Name	Type	Description
`begin`	Func	The delegate that begins the asynchronous operation.
`end`	Func	The delegate that ends the asynchronous operation.

Returns: Func> -- Function that can be used to start the asynchronous operation and retrieve the result as an observable sequence.

Remarks

Each invocation of the resulting function will cause the asynchronous operation to be started. Subscription to the resulting sequence has no observable side-effect, and each subscription will produce the asynchronous operation's result.

Exceptions

Type	Condition
System.ArgumentNullException	`begin` or `end` is null.

10. Overload¶

Deprecated

This conversion is no longer supported. Replace use of the Begin/End asynchronous method pair with a new Task-based async method, and convert the result using ToObservable. If no Task-based async method is available, use Task.Factory.FromAsync to obtain a Task object.

Attributes: [Obsolete("This conversion is no longer supported. Replace use of the Begin/End asynchronous method pair with a new Task-based async method, and convert the result using ToObservable. If no Task-based async method is available, use Task.Factory.FromAsync to obtain a Task object.")]

public static Func<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TArg8, TArg9, IObservable<TResult>> FromAsyncPattern<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TArg8, TArg9, TResult>(Func<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TArg8, TArg9, AsyncCallback, object?, IAsyncResult> begin, Func<IAsyncResult, TResult> end)

Summary: Converts a Begin/End invoke function pair into an asynchronous function.

Type parameters

Name	Description
`TArg1`	The type of the first argument passed to the begin delegate.
`TArg2`	The type of the second argument passed to the begin delegate.
`TArg3`	The type of the third argument passed to the begin delegate.
`TArg4`	The type of the fourth argument passed to the begin delegate.
`TArg5`	The type of the fifth argument passed to the begin delegate.
`TArg6`	The type of the sixth argument passed to the begin delegate.
`TArg7`	The type of the seventh argument passed to the begin delegate.
`TArg8`	The type of the eighth argument passed to the begin delegate.
`TArg9`	The type of the ninth argument passed to the begin delegate.
`TResult`	The type of the result returned by the end delegate.

Parameters

Name	Type	Description
`begin`	Func	The delegate that begins the asynchronous operation.
`end`	Func	The delegate that ends the asynchronous operation.

Returns: Func> -- Function that can be used to start the asynchronous operation and retrieve the result as an observable sequence.

Remarks

Each invocation of the resulting function will cause the asynchronous operation to be started. Subscription to the resulting sequence has no observable side-effect, and each subscription will produce the asynchronous operation's result.

Exceptions

Type	Condition
System.ArgumentNullException	`begin` or `end` is null.

11. Overload¶

Deprecated

This conversion is no longer supported. Replace use of the Begin/End asynchronous method pair with a new Task-based async method, and convert the result using ToObservable. If no Task-based async method is available, use Task.Factory.FromAsync to obtain a Task object.

Attributes: [Obsolete("This conversion is no longer supported. Replace use of the Begin/End asynchronous method pair with a new Task-based async method, and convert the result using ToObservable. If no Task-based async method is available, use Task.Factory.FromAsync to obtain a Task object.")]

public static Func<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TArg8, TArg9, TArg10, IObservable<TResult>> FromAsyncPattern<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TArg8, TArg9, TArg10, TResult>(Func<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TArg8, TArg9, TArg10, AsyncCallback, object?, IAsyncResult> begin, Func<IAsyncResult, TResult> end)

Summary: Converts a Begin/End invoke function pair into an asynchronous function.

Type parameters

Name	Description
`TArg1`	The type of the first argument passed to the begin delegate.
`TArg2`	The type of the second argument passed to the begin delegate.
`TArg3`	The type of the third argument passed to the begin delegate.
`TArg4`	The type of the fourth argument passed to the begin delegate.
`TArg5`	The type of the fifth argument passed to the begin delegate.
`TArg6`	The type of the sixth argument passed to the begin delegate.
`TArg7`	The type of the seventh argument passed to the begin delegate.
`TArg8`	The type of the eighth argument passed to the begin delegate.
`TArg9`	The type of the ninth argument passed to the begin delegate.
`TArg10`	The type of the tenth argument passed to the begin delegate.
`TResult`	The type of the result returned by the end delegate.

Parameters

Name	Type	Description
`begin`	Func	The delegate that begins the asynchronous operation.
`end`	Func	The delegate that ends the asynchronous operation.

Returns: Func> -- Function that can be used to start the asynchronous operation and retrieve the result as an observable sequence.

Remarks

Each invocation of the resulting function will cause the asynchronous operation to be started. Subscription to the resulting sequence has no observable side-effect, and each subscription will produce the asynchronous operation's result.

Exceptions

Type	Condition
System.ArgumentNullException	`begin` or `end` is null.

12. Overload¶

Deprecated

This conversion is no longer supported. Replace use of the Begin/End asynchronous method pair with a new Task-based async method, and convert the result using ToObservable. If no Task-based async method is available, use Task.Factory.FromAsync to obtain a Task object.

Attributes: [Obsolete("This conversion is no longer supported. Replace use of the Begin/End asynchronous method pair with a new Task-based async method, and convert the result using ToObservable. If no Task-based async method is available, use Task.Factory.FromAsync to obtain a Task object.")]

public static Func<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TArg8, TArg9, TArg10, TArg11, IObservable<TResult>> FromAsyncPattern<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TArg8, TArg9, TArg10, TArg11, TResult>(Func<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TArg8, TArg9, TArg10, TArg11, AsyncCallback, object?, IAsyncResult> begin, Func<IAsyncResult, TResult> end)

Summary: Converts a Begin/End invoke function pair into an asynchronous function.

Type parameters

Name	Description
`TArg1`	The type of the first argument passed to the begin delegate.
`TArg2`	The type of the second argument passed to the begin delegate.
`TArg3`	The type of the third argument passed to the begin delegate.
`TArg4`	The type of the fourth argument passed to the begin delegate.
`TArg5`	The type of the fifth argument passed to the begin delegate.
`TArg6`	The type of the sixth argument passed to the begin delegate.
`TArg7`	The type of the seventh argument passed to the begin delegate.
`TArg8`	The type of the eighth argument passed to the begin delegate.
`TArg9`	The type of the ninth argument passed to the begin delegate.
`TArg10`	The type of the tenth argument passed to the begin delegate.
`TArg11`	The type of the eleventh argument passed to the begin delegate.
`TResult`	The type of the result returned by the end delegate.

Parameters

Name	Type	Description
`begin`	Func	The delegate that begins the asynchronous operation.
`end`	Func	The delegate that ends the asynchronous operation.

Returns: Func> -- Function that can be used to start the asynchronous operation and retrieve the result as an observable sequence.

Remarks

Each invocation of the resulting function will cause the asynchronous operation to be started. Subscription to the resulting sequence has no observable side-effect, and each subscription will produce the asynchronous operation's result.

Exceptions

Type	Condition
System.ArgumentNullException	`begin` or `end` is null.

13. Overload¶

Deprecated

This conversion is no longer supported. Replace use of the Begin/End asynchronous method pair with a new Task-based async method, and convert the result using ToObservable. If no Task-based async method is available, use Task.Factory.FromAsync to obtain a Task object.

Attributes: [Obsolete("This conversion is no longer supported. Replace use of the Begin/End asynchronous method pair with a new Task-based async method, and convert the result using ToObservable. If no Task-based async method is available, use Task.Factory.FromAsync to obtain a Task object.")]

public static Func<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TArg8, TArg9, TArg10, TArg11, TArg12, IObservable<TResult>> FromAsyncPattern<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TArg8, TArg9, TArg10, TArg11, TArg12, TResult>(Func<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TArg8, TArg9, TArg10, TArg11, TArg12, AsyncCallback, object?, IAsyncResult> begin, Func<IAsyncResult, TResult> end)

Summary: Converts a Begin/End invoke function pair into an asynchronous function.

Type parameters

Name	Description
`TArg1`	The type of the first argument passed to the begin delegate.
`TArg2`	The type of the second argument passed to the begin delegate.
`TArg3`	The type of the third argument passed to the begin delegate.
`TArg4`	The type of the fourth argument passed to the begin delegate.
`TArg5`	The type of the fifth argument passed to the begin delegate.
`TArg6`	The type of the sixth argument passed to the begin delegate.
`TArg7`	The type of the seventh argument passed to the begin delegate.
`TArg8`	The type of the eighth argument passed to the begin delegate.
`TArg9`	The type of the ninth argument passed to the begin delegate.
`TArg10`	The type of the tenth argument passed to the begin delegate.
`TArg11`	The type of the eleventh argument passed to the begin delegate.
`TArg12`	The type of the twelfth argument passed to the begin delegate.
`TResult`	The type of the result returned by the end delegate.

Parameters

Name	Type	Description
`begin`	Func	The delegate that begins the asynchronous operation.
`end`	Func	The delegate that ends the asynchronous operation.

Returns: Func> -- Function that can be used to start the asynchronous operation and retrieve the result as an observable sequence.

Remarks

Each invocation of the resulting function will cause the asynchronous operation to be started. Subscription to the resulting sequence has no observable side-effect, and each subscription will produce the asynchronous operation's result.

Exceptions

Type	Condition
System.ArgumentNullException	`begin` or `end` is null.

14. Overload¶

Deprecated

This conversion is no longer supported. Replace use of the Begin/End asynchronous method pair with a new Task-based async method, and convert the result using ToObservable. If no Task-based async method is available, use Task.Factory.FromAsync to obtain a Task object.

Attributes: [Obsolete("This conversion is no longer supported. Replace use of the Begin/End asynchronous method pair with a new Task-based async method, and convert the result using ToObservable. If no Task-based async method is available, use Task.Factory.FromAsync to obtain a Task object.")]

public static Func<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TArg8, TArg9, TArg10, TArg11, TArg12, TArg13, IObservable<TResult>> FromAsyncPattern<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TArg8, TArg9, TArg10, TArg11, TArg12, TArg13, TResult>(Func<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TArg8, TArg9, TArg10, TArg11, TArg12, TArg13, AsyncCallback, object?, IAsyncResult> begin, Func<IAsyncResult, TResult> end)

Summary: Converts a Begin/End invoke function pair into an asynchronous function.

Type parameters

Name	Description
`TArg1`	The type of the first argument passed to the begin delegate.
`TArg2`	The type of the second argument passed to the begin delegate.
`TArg3`	The type of the third argument passed to the begin delegate.
`TArg4`	The type of the fourth argument passed to the begin delegate.
`TArg5`	The type of the fifth argument passed to the begin delegate.
`TArg6`	The type of the sixth argument passed to the begin delegate.
`TArg7`	The type of the seventh argument passed to the begin delegate.
`TArg8`	The type of the eighth argument passed to the begin delegate.
`TArg9`	The type of the ninth argument passed to the begin delegate.
`TArg10`	The type of the tenth argument passed to the begin delegate.
`TArg11`	The type of the eleventh argument passed to the begin delegate.
`TArg12`	The type of the twelfth argument passed to the begin delegate.
`TArg13`	The type of the thirteenth argument passed to the begin delegate.
`TResult`	The type of the result returned by the end delegate.

Parameters

Name	Type	Description
`begin`	Func	The delegate that begins the asynchronous operation.
`end`	Func	The delegate that ends the asynchronous operation.

Returns: Func> -- Function that can be used to start the asynchronous operation and retrieve the result as an observable sequence.

Remarks

Each invocation of the resulting function will cause the asynchronous operation to be started. Subscription to the resulting sequence has no observable side-effect, and each subscription will produce the asynchronous operation's result.

Exceptions

Type	Condition
System.ArgumentNullException	`begin` or `end` is null.

15. Overload¶

Deprecated

This conversion is no longer supported. Replace use of the Begin/End asynchronous method pair with a new Task-based async method, and convert the result using ToObservable. If no Task-based async method is available, use Task.Factory.FromAsync to obtain a Task object.

Attributes: [Obsolete("This conversion is no longer supported. Replace use of the Begin/End asynchronous method pair with a new Task-based async method, and convert the result using ToObservable. If no Task-based async method is available, use Task.Factory.FromAsync to obtain a Task object.")]

public static Func<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TArg8, TArg9, TArg10, TArg11, TArg12, TArg13, TArg14, IObservable<TResult>> FromAsyncPattern<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TArg8, TArg9, TArg10, TArg11, TArg12, TArg13, TArg14, TResult>(Func<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TArg8, TArg9, TArg10, TArg11, TArg12, TArg13, TArg14, AsyncCallback, object?, IAsyncResult> begin, Func<IAsyncResult, TResult> end)

Summary: Converts a Begin/End invoke function pair into an asynchronous function.

Type parameters

Name	Description
`TArg1`	The type of the first argument passed to the begin delegate.
`TArg2`	The type of the second argument passed to the begin delegate.
`TArg3`	The type of the third argument passed to the begin delegate.
`TArg4`	The type of the fourth argument passed to the begin delegate.
`TArg5`	The type of the fifth argument passed to the begin delegate.
`TArg6`	The type of the sixth argument passed to the begin delegate.
`TArg7`	The type of the seventh argument passed to the begin delegate.
`TArg8`	The type of the eighth argument passed to the begin delegate.
`TArg9`	The type of the ninth argument passed to the begin delegate.
`TArg10`	The type of the tenth argument passed to the begin delegate.
`TArg11`	The type of the eleventh argument passed to the begin delegate.
`TArg12`	The type of the twelfth argument passed to the begin delegate.
`TArg13`	The type of the thirteenth argument passed to the begin delegate.
`TArg14`	The type of the fourteenth argument passed to the begin delegate.
`TResult`	The type of the result returned by the end delegate.

Parameters

Name	Type	Description
`begin`	Func	The delegate that begins the asynchronous operation.
`end`	Func	The delegate that ends the asynchronous operation.

Returns: Func> -- Function that can be used to start the asynchronous operation and retrieve the result as an observable sequence.

Remarks

Each invocation of the resulting function will cause the asynchronous operation to be started. Subscription to the resulting sequence has no observable side-effect, and each subscription will produce the asynchronous operation's result.

Exceptions

Type	Condition
System.ArgumentNullException	`begin` or `end` is null.

16. Overload¶

Deprecated

This conversion is no longer supported. Replace use of the Begin/End asynchronous method pair with a new Task-based async method, and convert the result using ToObservable. If no Task-based async method is available, use Task.Factory.FromAsync to obtain a Task object.

Attributes: [Obsolete("This conversion is no longer supported. Replace use of the Begin/End asynchronous method pair with a new Task-based async method, and convert the result using ToObservable. If no Task-based async method is available, use Task.Factory.FromAsync to obtain a Task object.")]

public static Func<IObservable<Unit>> FromAsyncPattern(Func<AsyncCallback, object?, IAsyncResult> begin, Action<IAsyncResult> end)

Summary: Converts a Begin/End invoke function pair into an asynchronous function.

Parameters

Name	Type	Description
`begin`	Func	The delegate that begins the asynchronous operation.
`end`	Action	The delegate that ends the asynchronous operation.

Returns: Func> -- Function that can be used to start the asynchronous operation and retrieve the result (represented as a Unit value) as an observable sequence.

Remarks

Each invocation of the resulting function will cause the asynchronous operation to be started. Subscription to the resulting sequence has no observable side-effect, and each subscription will produce the asynchronous operation's result.

Exceptions

Type	Condition
System.ArgumentNullException	`begin` or `end` is null.

17. Overload¶

Deprecated

This conversion is no longer supported. Replace use of the Begin/End asynchronous method pair with a new Task-based async method, and convert the result using ToObservable. If no Task-based async method is available, use Task.Factory.FromAsync to obtain a Task object.

Attributes: [Obsolete("This conversion is no longer supported. Replace use of the Begin/End asynchronous method pair with a new Task-based async method, and convert the result using ToObservable. If no Task-based async method is available, use Task.Factory.FromAsync to obtain a Task object.")]

public static Func<TArg1, IObservable<Unit>> FromAsyncPattern<TArg1>(Func<TArg1, AsyncCallback, object?, IAsyncResult> begin, Action<IAsyncResult> end)

Summary: Converts a Begin/End invoke function pair into an asynchronous function.

Type parameters

Name	Description
`TArg1`	The type of the first argument passed to the begin delegate.

Parameters

Name	Type	Description
`begin`	Func	The delegate that begins the asynchronous operation.
`end`	Action	The delegate that ends the asynchronous operation.

Returns: Func> -- Function that can be used to start the asynchronous operation and retrieve the result (represented as a Unit value) as an observable sequence.

Remarks

Each invocation of the resulting function will cause the asynchronous operation to be started. Subscription to the resulting sequence has no observable side-effect, and each subscription will produce the asynchronous operation's result.

Exceptions

Type	Condition
System.ArgumentNullException	`begin` or `end` is null.

18. Overload¶

Deprecated

This conversion is no longer supported. Replace use of the Begin/End asynchronous method pair with a new Task-based async method, and convert the result using ToObservable. If no Task-based async method is available, use Task.Factory.FromAsync to obtain a Task object.

Attributes: [Obsolete("This conversion is no longer supported. Replace use of the Begin/End asynchronous method pair with a new Task-based async method, and convert the result using ToObservable. If no Task-based async method is available, use Task.Factory.FromAsync to obtain a Task object.")]

public static Func<TArg1, TArg2, IObservable<Unit>> FromAsyncPattern<TArg1, TArg2>(Func<TArg1, TArg2, AsyncCallback, object?, IAsyncResult> begin, Action<IAsyncResult> end)

Summary: Converts a Begin/End invoke function pair into an asynchronous function.

Type parameters

Name	Description
`TArg1`	The type of the first argument passed to the begin delegate.
`TArg2`	The type of the second argument passed to the begin delegate.

Parameters

Name	Type	Description
`begin`	Func	The delegate that begins the asynchronous operation.
`end`	Action	The delegate that ends the asynchronous operation.

Returns: Func> -- Function that can be used to start the asynchronous operation and retrieve the result (represented as a Unit value) as an observable sequence.

Remarks

Each invocation of the resulting function will cause the asynchronous operation to be started. Subscription to the resulting sequence has no observable side-effect, and each subscription will produce the asynchronous operation's result.

Exceptions

Type	Condition
System.ArgumentNullException	`begin` or `end` is null.

19. Overload¶

Deprecated

This conversion is no longer supported. Replace use of the Begin/End asynchronous method pair with a new Task-based async method, and convert the result using ToObservable. If no Task-based async method is available, use Task.Factory.FromAsync to obtain a Task object.

Attributes: [Obsolete("This conversion is no longer supported. Replace use of the Begin/End asynchronous method pair with a new Task-based async method, and convert the result using ToObservable. If no Task-based async method is available, use Task.Factory.FromAsync to obtain a Task object.")]

public static Func<TArg1, TArg2, TArg3, IObservable<Unit>> FromAsyncPattern<TArg1, TArg2, TArg3>(Func<TArg1, TArg2, TArg3, AsyncCallback, object?, IAsyncResult> begin, Action<IAsyncResult> end)

Summary: Converts a Begin/End invoke function pair into an asynchronous function.

Type parameters

Name	Description
`TArg1`	The type of the first argument passed to the begin delegate.
`TArg2`	The type of the second argument passed to the begin delegate.
`TArg3`	The type of the third argument passed to the begin delegate.

Parameters

Name	Type	Description
`begin`	Func	The delegate that begins the asynchronous operation.
`end`	Action	The delegate that ends the asynchronous operation.

Returns: Func> -- Function that can be used to start the asynchronous operation and retrieve the result (represented as a Unit value) as an observable sequence.

Remarks

Each invocation of the resulting function will cause the asynchronous operation to be started. Subscription to the resulting sequence has no observable side-effect, and each subscription will produce the asynchronous operation's result.

Exceptions

Type	Condition
System.ArgumentNullException	`begin` or `end` is null.

20. Overload¶

Deprecated

This conversion is no longer supported. Replace use of the Begin/End asynchronous method pair with a new Task-based async method, and convert the result using ToObservable. If no Task-based async method is available, use Task.Factory.FromAsync to obtain a Task object.

Attributes: [Obsolete("This conversion is no longer supported. Replace use of the Begin/End asynchronous method pair with a new Task-based async method, and convert the result using ToObservable. If no Task-based async method is available, use Task.Factory.FromAsync to obtain a Task object.")]

public static Func<TArg1, TArg2, TArg3, TArg4, IObservable<Unit>> FromAsyncPattern<TArg1, TArg2, TArg3, TArg4>(Func<TArg1, TArg2, TArg3, TArg4, AsyncCallback, object?, IAsyncResult> begin, Action<IAsyncResult> end)

Summary: Converts a Begin/End invoke function pair into an asynchronous function.

Type parameters

Name	Description
`TArg1`	The type of the first argument passed to the begin delegate.
`TArg2`	The type of the second argument passed to the begin delegate.
`TArg3`	The type of the third argument passed to the begin delegate.
`TArg4`	The type of the fourth argument passed to the begin delegate.

Parameters

Name	Type	Description
`begin`	Func	The delegate that begins the asynchronous operation.
`end`	Action	The delegate that ends the asynchronous operation.

Returns: Func> -- Function that can be used to start the asynchronous operation and retrieve the result (represented as a Unit value) as an observable sequence.

Remarks

Each invocation of the resulting function will cause the asynchronous operation to be started. Subscription to the resulting sequence has no observable side-effect, and each subscription will produce the asynchronous operation's result.

Exceptions

Type	Condition
System.ArgumentNullException	`begin` or `end` is null.

21. Overload¶

Deprecated

This conversion is no longer supported. Replace use of the Begin/End asynchronous method pair with a new Task-based async method, and convert the result using ToObservable. If no Task-based async method is available, use Task.Factory.FromAsync to obtain a Task object.

Attributes: [Obsolete("This conversion is no longer supported. Replace use of the Begin/End asynchronous method pair with a new Task-based async method, and convert the result using ToObservable. If no Task-based async method is available, use Task.Factory.FromAsync to obtain a Task object.")]

public static Func<TArg1, TArg2, TArg3, TArg4, TArg5, IObservable<Unit>> FromAsyncPattern<TArg1, TArg2, TArg3, TArg4, TArg5>(Func<TArg1, TArg2, TArg3, TArg4, TArg5, AsyncCallback, object?, IAsyncResult> begin, Action<IAsyncResult> end)

Summary: Converts a Begin/End invoke function pair into an asynchronous function.

Type parameters

Name	Description
`TArg1`	The type of the first argument passed to the begin delegate.
`TArg2`	The type of the second argument passed to the begin delegate.
`TArg3`	The type of the third argument passed to the begin delegate.
`TArg4`	The type of the fourth argument passed to the begin delegate.
`TArg5`	The type of the fifth argument passed to the begin delegate.

Parameters

Name	Type	Description
`begin`	Func	The delegate that begins the asynchronous operation.
`end`	Action	The delegate that ends the asynchronous operation.

Returns: Func> -- Function that can be used to start the asynchronous operation and retrieve the result (represented as a Unit value) as an observable sequence.

Remarks

Each invocation of the resulting function will cause the asynchronous operation to be started. Subscription to the resulting sequence has no observable side-effect, and each subscription will produce the asynchronous operation's result.

Exceptions

Type	Condition
System.ArgumentNullException	`begin` or `end` is null.

22. Overload¶

Deprecated

This conversion is no longer supported. Replace use of the Begin/End asynchronous method pair with a new Task-based async method, and convert the result using ToObservable. If no Task-based async method is available, use Task.Factory.FromAsync to obtain a Task object.

Attributes: [Obsolete("This conversion is no longer supported. Replace use of the Begin/End asynchronous method pair with a new Task-based async method, and convert the result using ToObservable. If no Task-based async method is available, use Task.Factory.FromAsync to obtain a Task object.")]

public static Func<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, IObservable<Unit>> FromAsyncPattern<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6>(Func<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, AsyncCallback, object?, IAsyncResult> begin, Action<IAsyncResult> end)

Summary: Converts a Begin/End invoke function pair into an asynchronous function.

Type parameters

Name	Description
`TArg1`	The type of the first argument passed to the begin delegate.
`TArg2`	The type of the second argument passed to the begin delegate.
`TArg3`	The type of the third argument passed to the begin delegate.
`TArg4`	The type of the fourth argument passed to the begin delegate.
`TArg5`	The type of the fifth argument passed to the begin delegate.
`TArg6`	The type of the sixth argument passed to the begin delegate.

Parameters

Name	Type	Description
`begin`	Func	The delegate that begins the asynchronous operation.
`end`	Action	The delegate that ends the asynchronous operation.

Returns: Func> -- Function that can be used to start the asynchronous operation and retrieve the result (represented as a Unit value) as an observable sequence.

Remarks

Each invocation of the resulting function will cause the asynchronous operation to be started. Subscription to the resulting sequence has no observable side-effect, and each subscription will produce the asynchronous operation's result.

Exceptions

Type	Condition
System.ArgumentNullException	`begin` or `end` is null.

23. Overload¶

Deprecated

This conversion is no longer supported. Replace use of the Begin/End asynchronous method pair with a new Task-based async method, and convert the result using ToObservable. If no Task-based async method is available, use Task.Factory.FromAsync to obtain a Task object.

Attributes: [Obsolete("This conversion is no longer supported. Replace use of the Begin/End asynchronous method pair with a new Task-based async method, and convert the result using ToObservable. If no Task-based async method is available, use Task.Factory.FromAsync to obtain a Task object.")]

public static Func<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, IObservable<Unit>> FromAsyncPattern<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7>(Func<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, AsyncCallback, object?, IAsyncResult> begin, Action<IAsyncResult> end)

Summary: Converts a Begin/End invoke function pair into an asynchronous function.

Type parameters

Name	Description
`TArg1`	The type of the first argument passed to the begin delegate.
`TArg2`	The type of the second argument passed to the begin delegate.
`TArg3`	The type of the third argument passed to the begin delegate.
`TArg4`	The type of the fourth argument passed to the begin delegate.
`TArg5`	The type of the fifth argument passed to the begin delegate.
`TArg6`	The type of the sixth argument passed to the begin delegate.
`TArg7`	The type of the seventh argument passed to the begin delegate.

Parameters

Name	Type	Description
`begin`	Func	The delegate that begins the asynchronous operation.
`end`	Action	The delegate that ends the asynchronous operation.

Returns: Func> -- Function that can be used to start the asynchronous operation and retrieve the result (represented as a Unit value) as an observable sequence.

Remarks

Each invocation of the resulting function will cause the asynchronous operation to be started. Subscription to the resulting sequence has no observable side-effect, and each subscription will produce the asynchronous operation's result.

Exceptions

Type	Condition
System.ArgumentNullException	`begin` or `end` is null.

24. Overload¶

Deprecated

This conversion is no longer supported. Replace use of the Begin/End asynchronous method pair with a new Task-based async method, and convert the result using ToObservable. If no Task-based async method is available, use Task.Factory.FromAsync to obtain a Task object.

Attributes: [Obsolete("This conversion is no longer supported. Replace use of the Begin/End asynchronous method pair with a new Task-based async method, and convert the result using ToObservable. If no Task-based async method is available, use Task.Factory.FromAsync to obtain a Task object.")]

public static Func<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TArg8, IObservable<Unit>> FromAsyncPattern<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TArg8>(Func<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TArg8, AsyncCallback, object?, IAsyncResult> begin, Action<IAsyncResult> end)

Summary: Converts a Begin/End invoke function pair into an asynchronous function.

Type parameters

Name	Description
`TArg1`	The type of the first argument passed to the begin delegate.
`TArg2`	The type of the second argument passed to the begin delegate.
`TArg3`	The type of the third argument passed to the begin delegate.
`TArg4`	The type of the fourth argument passed to the begin delegate.
`TArg5`	The type of the fifth argument passed to the begin delegate.
`TArg6`	The type of the sixth argument passed to the begin delegate.
`TArg7`	The type of the seventh argument passed to the begin delegate.
`TArg8`	The type of the eighth argument passed to the begin delegate.

Parameters

Name	Type	Description
`begin`	Func	The delegate that begins the asynchronous operation.
`end`	Action	The delegate that ends the asynchronous operation.

Returns: Func> -- Function that can be used to start the asynchronous operation and retrieve the result (represented as a Unit value) as an observable sequence.

Remarks

Each invocation of the resulting function will cause the asynchronous operation to be started. Subscription to the resulting sequence has no observable side-effect, and each subscription will produce the asynchronous operation's result.

Exceptions

Type	Condition
System.ArgumentNullException	`begin` or `end` is null.

25. Overload¶

Deprecated

This conversion is no longer supported. Replace use of the Begin/End asynchronous method pair with a new Task-based async method, and convert the result using ToObservable. If no Task-based async method is available, use Task.Factory.FromAsync to obtain a Task object.

Attributes: [Obsolete("This conversion is no longer supported. Replace use of the Begin/End asynchronous method pair with a new Task-based async method, and convert the result using ToObservable. If no Task-based async method is available, use Task.Factory.FromAsync to obtain a Task object.")]

public static Func<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TArg8, TArg9, IObservable<Unit>> FromAsyncPattern<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TArg8, TArg9>(Func<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TArg8, TArg9, AsyncCallback, object?, IAsyncResult> begin, Action<IAsyncResult> end)

Summary: Converts a Begin/End invoke function pair into an asynchronous function.

Type parameters

Name	Description
`TArg1`	The type of the first argument passed to the begin delegate.
`TArg2`	The type of the second argument passed to the begin delegate.
`TArg3`	The type of the third argument passed to the begin delegate.
`TArg4`	The type of the fourth argument passed to the begin delegate.
`TArg5`	The type of the fifth argument passed to the begin delegate.
`TArg6`	The type of the sixth argument passed to the begin delegate.
`TArg7`	The type of the seventh argument passed to the begin delegate.
`TArg8`	The type of the eighth argument passed to the begin delegate.
`TArg9`	The type of the ninth argument passed to the begin delegate.

Parameters

Name	Type	Description
`begin`	Func	The delegate that begins the asynchronous operation.
`end`	Action	The delegate that ends the asynchronous operation.

Returns: Func> -- Function that can be used to start the asynchronous operation and retrieve the result (represented as a Unit value) as an observable sequence.

Remarks

Each invocation of the resulting function will cause the asynchronous operation to be started. Subscription to the resulting sequence has no observable side-effect, and each subscription will produce the asynchronous operation's result.

Exceptions

Type	Condition
System.ArgumentNullException	`begin` or `end` is null.

26. Overload¶

Deprecated

This conversion is no longer supported. Replace use of the Begin/End asynchronous method pair with a new Task-based async method, and convert the result using ToObservable. If no Task-based async method is available, use Task.Factory.FromAsync to obtain a Task object.

Attributes: [Obsolete("This conversion is no longer supported. Replace use of the Begin/End asynchronous method pair with a new Task-based async method, and convert the result using ToObservable. If no Task-based async method is available, use Task.Factory.FromAsync to obtain a Task object.")]

public static Func<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TArg8, TArg9, TArg10, IObservable<Unit>> FromAsyncPattern<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TArg8, TArg9, TArg10>(Func<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TArg8, TArg9, TArg10, AsyncCallback, object?, IAsyncResult> begin, Action<IAsyncResult> end)

Summary: Converts a Begin/End invoke function pair into an asynchronous function.

Type parameters

Name	Description
`TArg1`	The type of the first argument passed to the begin delegate.
`TArg2`	The type of the second argument passed to the begin delegate.
`TArg3`	The type of the third argument passed to the begin delegate.
`TArg4`	The type of the fourth argument passed to the begin delegate.
`TArg5`	The type of the fifth argument passed to the begin delegate.
`TArg6`	The type of the sixth argument passed to the begin delegate.
`TArg7`	The type of the seventh argument passed to the begin delegate.
`TArg8`	The type of the eighth argument passed to the begin delegate.
`TArg9`	The type of the ninth argument passed to the begin delegate.
`TArg10`	The type of the tenth argument passed to the begin delegate.

Parameters

Name	Type	Description
`begin`	Func	The delegate that begins the asynchronous operation.
`end`	Action	The delegate that ends the asynchronous operation.

Returns: Func> -- Function that can be used to start the asynchronous operation and retrieve the result (represented as a Unit value) as an observable sequence.

Remarks

Each invocation of the resulting function will cause the asynchronous operation to be started. Subscription to the resulting sequence has no observable side-effect, and each subscription will produce the asynchronous operation's result.

Exceptions

Type	Condition
System.ArgumentNullException	`begin` or `end` is null.

27. Overload¶

Deprecated

This conversion is no longer supported. Replace use of the Begin/End asynchronous method pair with a new Task-based async method, and convert the result using ToObservable. If no Task-based async method is available, use Task.Factory.FromAsync to obtain a Task object.

Attributes: [Obsolete("This conversion is no longer supported. Replace use of the Begin/End asynchronous method pair with a new Task-based async method, and convert the result using ToObservable. If no Task-based async method is available, use Task.Factory.FromAsync to obtain a Task object.")]

public static Func<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TArg8, TArg9, TArg10, TArg11, IObservable<Unit>> FromAsyncPattern<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TArg8, TArg9, TArg10, TArg11>(Func<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TArg8, TArg9, TArg10, TArg11, AsyncCallback, object?, IAsyncResult> begin, Action<IAsyncResult> end)

Summary: Converts a Begin/End invoke function pair into an asynchronous function.

Type parameters

Name	Description
`TArg1`	The type of the first argument passed to the begin delegate.
`TArg2`	The type of the second argument passed to the begin delegate.
`TArg3`	The type of the third argument passed to the begin delegate.
`TArg4`	The type of the fourth argument passed to the begin delegate.
`TArg5`	The type of the fifth argument passed to the begin delegate.
`TArg6`	The type of the sixth argument passed to the begin delegate.
`TArg7`	The type of the seventh argument passed to the begin delegate.
`TArg8`	The type of the eighth argument passed to the begin delegate.
`TArg9`	The type of the ninth argument passed to the begin delegate.
`TArg10`	The type of the tenth argument passed to the begin delegate.
`TArg11`	The type of the eleventh argument passed to the begin delegate.

Parameters

Name	Type	Description
`begin`	Func	The delegate that begins the asynchronous operation.
`end`	Action	The delegate that ends the asynchronous operation.

Returns: Func> -- Function that can be used to start the asynchronous operation and retrieve the result (represented as a Unit value) as an observable sequence.

Remarks

Each invocation of the resulting function will cause the asynchronous operation to be started. Subscription to the resulting sequence has no observable side-effect, and each subscription will produce the asynchronous operation's result.

Exceptions

Type	Condition
System.ArgumentNullException	`begin` or `end` is null.

28. Overload¶

Deprecated

This conversion is no longer supported. Replace use of the Begin/End asynchronous method pair with a new Task-based async method, and convert the result using ToObservable. If no Task-based async method is available, use Task.Factory.FromAsync to obtain a Task object.

Attributes: [Obsolete("This conversion is no longer supported. Replace use of the Begin/End asynchronous method pair with a new Task-based async method, and convert the result using ToObservable. If no Task-based async method is available, use Task.Factory.FromAsync to obtain a Task object.")]

public static Func<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TArg8, TArg9, TArg10, TArg11, TArg12, IObservable<Unit>> FromAsyncPattern<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TArg8, TArg9, TArg10, TArg11, TArg12>(Func<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TArg8, TArg9, TArg10, TArg11, TArg12, AsyncCallback, object?, IAsyncResult> begin, Action<IAsyncResult> end)

Summary: Converts a Begin/End invoke function pair into an asynchronous function.

Type parameters

Name	Description
`TArg1`	The type of the first argument passed to the begin delegate.
`TArg2`	The type of the second argument passed to the begin delegate.
`TArg3`	The type of the third argument passed to the begin delegate.
`TArg4`	The type of the fourth argument passed to the begin delegate.
`TArg5`	The type of the fifth argument passed to the begin delegate.
`TArg6`	The type of the sixth argument passed to the begin delegate.
`TArg7`	The type of the seventh argument passed to the begin delegate.
`TArg8`	The type of the eighth argument passed to the begin delegate.
`TArg9`	The type of the ninth argument passed to the begin delegate.
`TArg10`	The type of the tenth argument passed to the begin delegate.
`TArg11`	The type of the eleventh argument passed to the begin delegate.
`TArg12`	The type of the twelfth argument passed to the begin delegate.

Parameters

Name	Type	Description
`begin`	Func	The delegate that begins the asynchronous operation.
`end`	Action	The delegate that ends the asynchronous operation.

Returns: Func> -- Function that can be used to start the asynchronous operation and retrieve the result (represented as a Unit value) as an observable sequence.

Remarks

Each invocation of the resulting function will cause the asynchronous operation to be started. Subscription to the resulting sequence has no observable side-effect, and each subscription will produce the asynchronous operation's result.

Exceptions

Type	Condition
System.ArgumentNullException	`begin` or `end` is null.

29. Overload¶

Deprecated

This conversion is no longer supported. Replace use of the Begin/End asynchronous method pair with a new Task-based async method, and convert the result using ToObservable. If no Task-based async method is available, use Task.Factory.FromAsync to obtain a Task object.

Attributes: [Obsolete("This conversion is no longer supported. Replace use of the Begin/End asynchronous method pair with a new Task-based async method, and convert the result using ToObservable. If no Task-based async method is available, use Task.Factory.FromAsync to obtain a Task object.")]

public static Func<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TArg8, TArg9, TArg10, TArg11, TArg12, TArg13, IObservable<Unit>> FromAsyncPattern<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TArg8, TArg9, TArg10, TArg11, TArg12, TArg13>(Func<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TArg8, TArg9, TArg10, TArg11, TArg12, TArg13, AsyncCallback, object?, IAsyncResult> begin, Action<IAsyncResult> end)

Summary: Converts a Begin/End invoke function pair into an asynchronous function.

Type parameters

Name	Description
`TArg1`	The type of the first argument passed to the begin delegate.
`TArg2`	The type of the second argument passed to the begin delegate.
`TArg3`	The type of the third argument passed to the begin delegate.
`TArg4`	The type of the fourth argument passed to the begin delegate.
`TArg5`	The type of the fifth argument passed to the begin delegate.
`TArg6`	The type of the sixth argument passed to the begin delegate.
`TArg7`	The type of the seventh argument passed to the begin delegate.
`TArg8`	The type of the eighth argument passed to the begin delegate.
`TArg9`	The type of the ninth argument passed to the begin delegate.
`TArg10`	The type of the tenth argument passed to the begin delegate.
`TArg11`	The type of the eleventh argument passed to the begin delegate.
`TArg12`	The type of the twelfth argument passed to the begin delegate.
`TArg13`	The type of the thirteenth argument passed to the begin delegate.

Parameters

Name	Type	Description
`begin`	Func	The delegate that begins the asynchronous operation.
`end`	Action	The delegate that ends the asynchronous operation.

Returns: Func> -- Function that can be used to start the asynchronous operation and retrieve the result (represented as a Unit value) as an observable sequence.

Remarks

Each invocation of the resulting function will cause the asynchronous operation to be started. Subscription to the resulting sequence has no observable side-effect, and each subscription will produce the asynchronous operation's result.

Exceptions

Type	Condition
System.ArgumentNullException	`begin` or `end` is null.

30. Overload¶

Deprecated

This conversion is no longer supported. Replace use of the Begin/End asynchronous method pair with a new Task-based async method, and convert the result using ToObservable. If no Task-based async method is available, use Task.Factory.FromAsync to obtain a Task object.

Attributes: [Obsolete("This conversion is no longer supported. Replace use of the Begin/End asynchronous method pair with a new Task-based async method, and convert the result using ToObservable. If no Task-based async method is available, use Task.Factory.FromAsync to obtain a Task object.")]

public static Func<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TArg8, TArg9, TArg10, TArg11, TArg12, TArg13, TArg14, IObservable<Unit>> FromAsyncPattern<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TArg8, TArg9, TArg10, TArg11, TArg12, TArg13, TArg14>(Func<TArg1, TArg2, TArg3, TArg4, TArg5, TArg6, TArg7, TArg8, TArg9, TArg10, TArg11, TArg12, TArg13, TArg14, AsyncCallback, object?, IAsyncResult> begin, Action<IAsyncResult> end)

Summary: Converts a Begin/End invoke function pair into an asynchronous function.

Type parameters

Name	Description
`TArg1`	The type of the first argument passed to the begin delegate.
`TArg2`	The type of the second argument passed to the begin delegate.
`TArg3`	The type of the third argument passed to the begin delegate.
`TArg4`	The type of the fourth argument passed to the begin delegate.
`TArg5`	The type of the fifth argument passed to the begin delegate.
`TArg6`	The type of the sixth argument passed to the begin delegate.
`TArg7`	The type of the seventh argument passed to the begin delegate.
`TArg8`	The type of the eighth argument passed to the begin delegate.
`TArg9`	The type of the ninth argument passed to the begin delegate.
`TArg10`	The type of the tenth argument passed to the begin delegate.
`TArg11`	The type of the eleventh argument passed to the begin delegate.
`TArg12`	The type of the twelfth argument passed to the begin delegate.
`TArg13`	The type of the thirteenth argument passed to the begin delegate.
`TArg14`	The type of the fourteenth argument passed to the begin delegate.

Parameters

Name	Type	Description
`begin`	Func	The delegate that begins the asynchronous operation.
`end`	Action	The delegate that ends the asynchronous operation.

Returns: Func> -- Function that can be used to start the asynchronous operation and retrieve the result (represented as a Unit value) as an observable sequence.

Remarks

Each invocation of the resulting function will cause the asynchronous operation to be started. Subscription to the resulting sequence has no observable side-effect, and each subscription will produce the asynchronous operation's result.

Exceptions

Type	Condition
System.ArgumentNullException	`begin` or `end` is null.