Qbservable.Catch<TSource> Method (IQbservable<TSource>, IObservable<TSource>)
Continues a queryable observable sequence that is terminated by an exception with the next queryable observable sequence.
Namespace: System.Reactive.Linq
Assembly: System.Reactive.Providers (in System.Reactive.Providers.dll)
Syntax
'Declaration
<ExtensionAttribute> _
Public Shared Function Catch(Of TSource) ( _
first As IQbservable(Of TSource), _
second As IObservable(Of TSource) _
) As IQbservable(Of TSource)
'Usage
Dim first As IQbservable(Of TSource)
Dim second As IObservable(Of TSource)
Dim returnValue As IQbservable(Of TSource)
returnValue = first.Catch(second)
public static IQbservable<TSource> Catch<TSource>(
this IQbservable<TSource> first,
IObservable<TSource> second
)
[ExtensionAttribute]
public:
generic<typename TSource>
static IQbservable<TSource>^ Catch(
IQbservable<TSource>^ first,
IObservable<TSource>^ second
)
static member Catch :
first:IQbservable<'TSource> *
second:IObservable<'TSource> -> IQbservable<'TSource>
JScript does not support generic types and methods.
Type Parameters
- TSource
The type of source.
Parameters
- first
Type: System.Reactive.Linq.IQbservable<TSource>
First queryable observable sequence whose exception (if any) is caught.
- second
Type: System.IObservable<TSource>
The second queryable observable sequence used to produce results when an error occurred in the first sequence.
Return Value
Type: System.Reactive.Linq.IQbservable<TSource>
A queryable observable sequence containing the first sequence's elements, followed by the elements of the second sequence in case an exception occurred.
Usage Note
In Visual Basic and C#, you can call this method as an instance method on any object of type IQbservable<TSource>. When you use instance method syntax to call this method, omit the first parameter. For more information, see or .