Observable.LastOrDefault(Of TSource) Method (IObservable(Of TSource))

Returns last element in the observable sequence, or a default value if no value is found.

Namespace:  System.Reactive.Linq
Assembly:  System.Reactive (in System.Reactive.dll)

'Declaration
<ExtensionAttribute> _
Public Shared Function LastOrDefault(Of TSource) ( _
	source As IObservable(Of TSource) _
) As TSource
'Usage
Dim source As IObservable(Of TSource)
Dim returnValue As TSource

returnValue = source.LastOrDefault()

Type Parameters

TSource

The type of source.

Parameters

source
Type: System.IObservable(Of TSource)
The source observable sequence.

Return Value

Type: TSource
The last element in the observable sequence, or a default value if no value is found.

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type IObservable(Of TSource). When you use instance method syntax to call this method, omit the first parameter. For more information, see https://msdn.microsoft.com/en-us/library/bb384936(v=vs.103).aspx or https://msdn.microsoft.com/en-us/library/bb383977(v=vs.103).aspx.
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