Any(TSource) Method (IQbservable(TSource))
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Qbservable.Any<TSource> Method (IQbservable<TSource>)

Determines whether a queryable observable sequence contains any elements.

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

public static IQbservable<bool> Any<TSource>(
	this IQbservable<TSource> source

Type Parameters


The type of source.


Type: System.Reactive.Linq.IQbservable<TSource>
A queryable observable sequence to check for non-emptiness.

Return Value

Type: System.Reactive.Linq.IQbservable<Boolean>
True if a queryable observable sequence contains any elements; otherwise, false.

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type IQbservable<TSource>. When you use instance method syntax to call this method, omit the first parameter. For more information, see or
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