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Observable::Select<TSource, TResult> Method (IObservable<TSource>, Func<TSource, Int32, TResult>)

Projects each element of an observable sequence into a new form by incorporating the element’s index with the specified source and selector.

Namespace:  System.Reactive.Linq
Assembly:  System.Reactive (in System.Reactive.dll)
[ExtensionAttribute]
public:
generic<typename TSource, typename TResult>
static IObservable<TResult>^ Select(
	IObservable<TSource>^ source, 
	Func<TSource, int, TResult>^ selector
)

Type Parameters

TSource

The type of source.

TResult

The type of result.

Parameters

source
Type: System::IObservable<TSource>
A sequence of elements to invoke a transform function on.
selector
Type: System::Func<TSource, Int32, TResult>
A transform function to apply to each source element.

Return Value

Type: System::IObservable<TResult>
An observable sequence into a new form.

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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