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Observable.First<TSource> Method

March 22, 2012

Returns the first value of an observable sequence.

Namespace: Microsoft.Phone.Reactive
Assembly: Microsoft.Phone.Reactive (in Microsoft.Phone.Reactive.dll)

public static TSource First<TSource>(
	this IObservable<TSource> source
)

Type Parameters

TSource

Parameters

source: Type: System.IObservable<TSource>

Return Value

Type: TSource
Returns IObservable<T>.

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.

Version Information

Windows Phone OS

Supported in: 7.1, 7.0

Platforms

Windows Phone

Reference

Observable Class

Microsoft.Phone.Reactive Namespace

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