,System.IObserver{--0})} ,System.Linq.Expressions.Expression{System.Action{--0}})} ,System.Linq.Expressions.Expression{System.Action{--0}},System.Linq.Expressions.Expression{System.Action})} ,System.Linq.Expressions.Expression{System.Action{--0}},System.Linq.Expressions.Expression{System.Action{System.Exception}})} ,System.Linq.Expressions.Expression{System.Action{--0}},System.Linq.Expressions.Expression{System.Action{System.Exception}},System.Linq.Expressions.Expression{System.Action})}

Qbservable.Do(IQbservable, IObserver) method¶

Defined in

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

Applies to

netstandard2.0

Overloads¶

1. public static IQbservable<TSource> Do<TSource>(this IQbservable<TSource> source, IObserver<TSource> observer)
2. public static IQbservable<TSource> Do<TSource>(this IQbservable<TSource> source, Expression<Action<TSource>> onNext)
3. public static IQbservable<TSource> Do<TSource>(this IQbservable<TSource> source, Expression<Action<TSource>> onNext, Expression<Action> onCompleted)
4. public static IQbservable<TSource> Do<TSource>(this IQbservable<TSource> source, Expression<Action<TSource>> onNext, Expression<Action<Exception>> onError)
5. public static IQbservable<TSource> Do<TSource>(this IQbservable<TSource> source, Expression<Action<TSource>> onNext, Expression<Action<Exception>> onError, Expression<Action> onCompleted)

1. Overload¶

public static IQbservable<TSource> Do<TSource>(this IQbservable<TSource> source, IObserver<TSource> observer)

Summary: Invokes the observer's methods for each message in the source sequence. This method can be used for debugging, logging, etc. of query behavior by intercepting the message stream to run arbitrary actions for messages on the pipeline.

Type parameters

Name	Description
`TSource`	The type of the elements in the source sequence.

Parameters

Name	Type	Description
`source`	[IQbservable](#	Source sequence.
`observer`	IObserver	Observer whose methods to invoke as part of the source sequence's observation.

Returns: IQbservable -- The source sequence with the side-effecting behavior applied.

Exceptions

Type	Condition
System.ArgumentNullException	`source` or `observer` is null.

2. Overload¶

public static IQbservable<TSource> Do<TSource>(this IQbservable<TSource> source, Expression<Action<TSource>> onNext)

Summary: Invokes an action for each element in the observable sequence, and propagates all observer messages through the result sequence. This method can be used for debugging, logging, etc. of query behavior by intercepting the message stream to run arbitrary actions for messages on the pipeline.

Type parameters

Name	Description
`TSource`	The type of the elements in the source sequence.

Parameters

Name	Type	Description
`source`	[IQbservable](#	Source sequence.
`onNext`	Expression>	Action to invoke for each element in the observable sequence.

Returns: IQbservable -- The source sequence with the side-effecting behavior applied.

Exceptions

Type	Condition
System.ArgumentNullException	`source` or `onNext` is null.

3. Overload¶

public static IQbservable<TSource> Do<TSource>(this IQbservable<TSource> source, Expression<Action<TSource>> onNext, Expression<Action> onCompleted)

Summary: Invokes an action for each element in the observable sequence and invokes an action upon graceful termination of the observable sequence. This method can be used for debugging, logging, etc. of query behavior by intercepting the message stream to run arbitrary actions for messages on the pipeline.

Type parameters

Name	Description
`TSource`	The type of the elements in the source sequence.

Parameters

Name	Type	Description
`source`	[IQbservable](#	Source sequence.
`onNext`	Expression>	Action to invoke for each element in the observable sequence.
`onCompleted`	Expression	Action to invoke upon graceful termination of the observable sequence.

Returns: IQbservable -- The source sequence with the side-effecting behavior applied.

Exceptions

Type	Condition
System.ArgumentNullException	`source` or `onNext` or `onCompleted` is null.

4. Overload¶

public static IQbservable<TSource> Do<TSource>(this IQbservable<TSource> source, Expression<Action<TSource>> onNext, Expression<Action<Exception>> onError)

Summary: Invokes an action for each element in the observable sequence and invokes an action upon exceptional termination of the observable sequence. This method can be used for debugging, logging, etc. of query behavior by intercepting the message stream to run arbitrary actions for messages on the pipeline.

Type parameters

Name	Description
`TSource`	The type of the elements in the source sequence.

Parameters

Name	Type	Description
`source`	[IQbservable](#	Source sequence.
`onNext`	Expression>	Action to invoke for each element in the observable sequence.
`onError`	Expression>	Action to invoke upon exceptional termination of the observable sequence.

Returns: IQbservable -- The source sequence with the side-effecting behavior applied.

Exceptions

Type	Condition
System.ArgumentNullException	`source` or `onNext` or `onError` is null.

5. Overload¶

public static IQbservable<TSource> Do<TSource>(this IQbservable<TSource> source, Expression<Action<TSource>> onNext, Expression<Action<Exception>> onError, Expression<Action> onCompleted)

Summary: Invokes an action for each element in the observable sequence and invokes an action upon graceful or exceptional termination of the observable sequence. This method can be used for debugging, logging, etc. of query behavior by intercepting the message stream to run arbitrary actions for messages on the pipeline.

Type parameters

Name	Description
`TSource`	The type of the elements in the source sequence.

Parameters

Name	Type	Description
`source`	[IQbservable](#	Source sequence.
`onNext`	Expression>	Action to invoke for each element in the observable sequence.
`onError`	Expression>	Action to invoke upon exceptional termination of the observable sequence.
`onCompleted`	Expression	Action to invoke upon graceful termination of the observable sequence.

Returns: IQbservable -- The source sequence with the side-effecting behavior applied.

Exceptions

Type	Condition
System.ArgumentNullException	`source` or `onNext` or `onError` or `onCompleted` is null.