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Observable.ElementAtOrDefault(TSource) Method

Returns the element at a specified index in a sequence or a default value if the index is out of range.

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

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Type Parameters

TSource

The type of source.

Parameters

source
Type: System.IObservable(TSource)
The observable sequence to return the element from.
index
Type: System.Int32
The zero-based index of the element to retrieve.

Return Value

Type: System.IObservable(TSource)
An observable sequence that produces the element at the specified position in the source sequence or a default value if the index is outside the bounds of the source sequence.

Usage Note

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