MongoQueryable.AnyAsync<TSource> Method (IMongoQueryable<TSource>, CancellationToken) |
Determines whether a sequence contains any elements.
Namespace:
MongoDB.Driver.Linq
Assembly:
MongoDB.Driver (in MongoDB.Driver.dll) Version: 2.15.0+f503bf610759c13f78cff9a3c01e91453185d2ed
Syntax public static Task<bool> AnyAsync<TSource>(
this IMongoQueryable<TSource> source,
CancellationToken cancellationToken = default
)
<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 new CancellationToken()
*)
-> Task<bool>
Parameters
- source
- Type: MongoDB.Driver.Linq.IMongoQueryable<TSource>
A sequence to check for being empty. - cancellationToken (Optional)
- Type: System.Threading.CancellationToken
The cancellation token.
Type Parameters
- TSource
- The type of the elements of source.
Return Value
Type:
Task<Boolean>
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
IMongoQueryable<TSource>. 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