Observable.Catch(IObservable<TSource>, Func<TException, IObservable<TSource>>) method

>,System.Func{--1,System.IObservable{--0}})} ,System.IObservable{--0})} [])}

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

Applies to

netstandard2.0

Overloads

1. public static IObservable<TSource> Catch<TSource, TException>(this IObservable<TSource> source, Func<TException, IObservable<TSource>> handler) where TException : Exception
2. public static IObservable<TSource> Catch<TSource>(this IObservable<TSource> first, IObservable<TSource> second)
3. public static IObservable<TSource> Catch<TSource>(params IObservable<TSource>[] sources)
4. public static IObservable<TSource> Catch<TSource>(this IEnumerable<IObservable<TSource>> sources)

1. Overload

public static IObservable<TSource> Catch<TSource, TException>(this IObservable<TSource> source, Func<TException, IObservable<TSource>> handler) where TException : Exception

Summary: Continues an observable sequence that is terminated by an exception of the specified type with the observable sequence produced by the handler.

Type parameters

Name	Description
`TSource`	The type of the elements in the source sequence and sequences returned by the exception handler function.
`TException`	The type of the exception to catch and handle. Needs to derive from Exception.

Parameters

Name	Type	Description
`source`	IObservable	Source sequence.
`handler`	Func>	Exception handler function, producing another observable sequence.

Returns: IObservable -- An observable sequence containing the source sequence's elements, followed by the elements produced by the handler's resulting observable sequence in case an exception occurred.

Exceptions

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

2. Overload

public static IObservable<TSource> Catch<TSource>(this IObservable<TSource> first, IObservable<TSource> second)

Summary: Continues an observable sequence that is terminated by an exception with the next observable sequence.

Type parameters

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

Parameters

Name	Type	Description
`first`	IObservable	First observable sequence whose exception (if any) is caught.
`second`	IObservable	Second observable sequence used to produce results when an error occurred in the first sequence.

Returns: IObservable -- An observable sequence containing the first sequence's elements, followed by the elements of the second sequence in case an exception occurred.

Exceptions

Type	Condition
System.ArgumentNullException	`first` or `second` is null.

3. Overload

public static IObservable<TSource> Catch<TSource>(params IObservable<TSource>[] sources)

Summary: Continues an observable sequence that is terminated by an exception with the next observable sequence.

Type parameters

Name	Description
`TSource`	The type of the elements in the source and handler sequences.

Parameters

Name	Type	Description
`params sources`	`IObservable<TSource>[]`	Observable sequences to catch exceptions for.

Returns: IObservable -- An observable sequence containing elements from consecutive source sequences until a source sequence terminates successfully.

Exceptions

Type	Condition
System.ArgumentNullException	`sources` is null.

4. Overload

public static IObservable<TSource> Catch<TSource>(this IEnumerable<IObservable<TSource>> sources)

Summary: Continues an observable sequence that is terminated by an exception with the next observable sequence.

Type parameters

Name	Description
`TSource`	The type of the elements in the source and handler sequences.

Parameters

Name	Type	Description
`sources`	IEnumerable>	Observable sequences to catch exceptions for.

Returns: IObservable -- An observable sequence containing elements from consecutive source sequences until a source sequence terminates successfully.

Exceptions

Type	Condition
System.ArgumentNullException	`sources` is null.