FindFluentBaseTDocument, TProjectionCountDocumentsAsync Method  | 
 
            Counts the number of documents.
            
 
    Namespace: 
   MongoDB.Driver
    Assembly:
   MongoDB.Driver (in MongoDB.Driver.dll) Version: 2.22.0+75246110ed1247226fcc7f8eb2c54ffab745693e
Syntaxpublic virtual Task<long> CountDocumentsAsync(
	CancellationToken cancellationToken = default
)
Public Overridable Function CountDocumentsAsync ( 
	Optional cancellationToken As CancellationToken = Nothing
) As Task(Of Long)
abstract CountDocumentsAsync : 
        ?cancellationToken : CancellationToken 
(* Defaults:
        let _cancellationToken = defaultArg cancellationToken new CancellationToken()
*)
-> Task<int64> 
override CountDocumentsAsync : 
        ?cancellationToken : CancellationToken 
(* Defaults:
        let _cancellationToken = defaultArg cancellationToken new CancellationToken()
*)
-> Task<int64> Parameters
- cancellationToken (Optional)
 - Type: System.ThreadingCancellationToken
The cancellation token. 
Return Value
Type: 
TaskInt64A Task whose result is the count.
Implements
IFindFluentTDocument, TProjectionCountDocumentsAsync(CancellationToken)
Remarks
            Note: when migrating from CountAsync to CountDocumentsAsync the following query operations must be replaced:
            
            
+-------------+--------------------------------+
| Operator    | Replacement                    |
+=============+================================+
| $where      |  $expr                         |
+-------------+--------------------------------+
| $near       |  $geoWithin with $center       |
+-------------+--------------------------------+
| $nearSphere |  $geoWithin with $centerSphere |
+-------------+--------------------------------+
See Also