IAsyncCursorSourceExtensionsAnyAsyncTDocument Method

Determines whether the cursor returned by a cursor source contains any documents.

Namespace: MongoDB.Driver
Assembly: MongoDB.Driver.Core (in MongoDB.Driver.Core.dll) Version: 2.9.0+32b058abcdf2c7e8d9dd3a676d207b31897eee2e

Syntax

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public static Task<bool> AnyAsync<TDocument>(
	this IAsyncCursorSource<TDocument> source,
	CancellationToken cancellationToken = null
)

<ExtensionAttribute>
Public Shared Function AnyAsync(Of TDocument) ( 
	source As IAsyncCursorSource(Of TDocument),
	Optional cancellationToken As CancellationToken = Nothing
) As Task(Of Boolean)

[<ExtensionAttribute>]
static member AnyAsync : 
        source : IAsyncCursorSource<'TDocument> * 
        ?cancellationToken : CancellationToken 
(* Defaults:
        let _cancellationToken = defaultArg cancellationToken null
*)
-> Task<bool>

Parameters

source: Type: MongoDB.DriverIAsyncCursorSourceTDocument
The source.
cancellationToken (Optional): Type: System.ThreadingCancellationToken
The cancellation token.

Type Parameters

TDocument: The type of the document.

Return Value

Type: TaskBoolean
A Task whose result is true if the cursor contains any documents.

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type IAsyncCursorSourceTDocument. When you use instance method syntax to call this method, omit the first parameter. For more information, see Extension Methods (Visual Basic) or Extension Methods (C# Programming Guide).

Reference

IAsyncCursorSourceExtensions Class