Qbservable.LongCount<TSource> Method

Returns a [System.Int64] that represents the total number of elements in a queryable observable sequence.

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

public static IQbservable<long> LongCount<TSource>(
	this IQbservable<TSource> source
)

Type Parameters

TSource

The type of source.

Parameters

source
Type: System.Reactive.Linq.IQbservable<TSource>
A queryable observable sequence that contains elements to be counted.

Return Value

Type: System.Reactive.Linq.IQbservable<Int64>
A [System.Int64] that represents the total number of elements in a queryable observable sequence.

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 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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