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)

[ExtensionAttribute]
public:
generic<typename TSource>
static IObservable<TSource>^ ElementAtOrDefault(
	IObservable<TSource>^ source, 
	int index
)

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 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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