MongoQueryableLongCountAsyncTSource Method (IMongoQueryableTSource, CancellationToken) |
Returns the number of elements in a sequence.
Namespace:
MongoDB.Driver.Linq
Assembly:
MongoDB.Driver (in MongoDB.Driver.dll) Version: 2.22.0+75246110ed1247226fcc7f8eb2c54ffab745693e
Syntax public static Task<long> LongCountAsync<TSource>(
this IMongoQueryable<TSource> source,
CancellationToken cancellationToken = default
)
<ExtensionAttribute>
Public Shared Function LongCountAsync(Of TSource) (
source As IMongoQueryable(Of TSource),
Optional cancellationToken As CancellationToken = Nothing
) As Task(Of Long)
[<ExtensionAttribute>]
static member LongCountAsync :
source : IMongoQueryable<'TSource> *
?cancellationToken : CancellationToken
(* Defaults:
let _cancellationToken = defaultArg cancellationToken new CancellationToken()
*)
-> Task<int64>
Parameters
- source
- Type: MongoDB.Driver.LinqIMongoQueryableTSource
The IMongoQueryableT that contains the elements to be counted. - cancellationToken (Optional)
- Type: System.ThreadingCancellationToken
The cancellation token.
Type Parameters
- TSource
- The type of the elements of source.
Return Value
Type:
TaskInt64
The number of elements in the input sequence.
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