MongoQueryableAnyAsyncTSource Method (IMongoQueryableTSource, CancellationToken) |
Determines whether a sequence contains any elements.
Namespace:
MongoDB.Driver.Linq
Assembly:
MongoDB.Driver (in MongoDB.Driver.dll) Version: 2.21.0+5a9c3311e158910b88195f290e6d4b1b2715d2b2
Syntax public static Task<bool> AnyAsync<TSource>(
this IMongoQueryable<TSource> source,
CancellationToken cancellationToken = null
)
<ExtensionAttribute>
Public Shared Function AnyAsync(Of TSource) (
source As IMongoQueryable(Of TSource),
Optional cancellationToken As CancellationToken = Nothing
) As Task(Of Boolean)
[<ExtensionAttribute>]
static member AnyAsync :
source : IMongoQueryable<'TSource> *
?cancellationToken : CancellationToken
(* Defaults:
let _cancellationToken = defaultArg cancellationToken null
*)
-> Task<bool>
Parameters
- source
- Type: MongoDB.Driver.LinqIMongoQueryableTSource
A sequence to check for being empty. - cancellationToken (Optional)
- Type: System.ThreadingCancellationToken
The cancellation token.
Type Parameters
- TSource
- The type of the elements of source.
Return Value
Type:
TaskBoolean
true if the source 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
IMongoQueryableTSource. 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).
See Also