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Observable.All<TSource> Method

Determines whether all elements of an observable sequence satisfies a condition.

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

public static IObservable<bool> All<TSource>(
	this IObservable<TSource> source,
	Func<TSource, bool> predicate
)

Type Parameters

TSource

The type of source.

Parameters

source
Type: System.IObservable<TSource>
An observable sequence whose elements to apply the predicate to.
predicate
Type: System.Func<TSource, Boolean>
A function to test each element for a condition.

Return Value

Type: System.IObservable<Boolean>
True if all elements of an observable sequence satisfies a condition; otherwise, false.

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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