MongoCollectionBaseTDocumentCountAsync Method (FilterDefinitionTDocument, CountOptions, CancellationToken)

Counts the number of documents in the collection.

Namespace: MongoDB.Driver
Assembly: MongoDB.Driver (in MongoDB.Driver.dll) Version: 2.5.0+57.Branch.master.Sha.6a4e00a2d91090c65a9b11364b9ebfdb9c7da076

Syntax

Copy

public abstract Task<long> CountAsync(
	FilterDefinition<TDocument> filter,
	CountOptions options = null,
	CancellationToken cancellationToken = null
)

Public MustOverride Function CountAsync ( 
	filter As FilterDefinition(Of TDocument),
	Optional options As CountOptions = Nothing,
	Optional cancellationToken As CancellationToken = Nothing
) As Task(Of Long)

abstract CountAsync : 
        filter : FilterDefinition<'TDocument> * 
        ?options : CountOptions * 
        ?cancellationToken : CancellationToken 
(* Defaults:
        let _options = defaultArg options null
        let _cancellationToken = defaultArg cancellationToken null
*)
-> Task<int64>

Parameters

filter: Type: MongoDB.DriverFilterDefinitionTDocument
The filter.
options (Optional): Type: MongoDB.DriverCountOptions
The options.
cancellationToken (Optional): Type: System.ThreadingCancellationToken
The cancellation token.

Return Value

Type: TaskInt64
The number of documents in the collection.

Implements

IMongoCollectionTDocumentCountAsync(FilterDefinitionTDocument, CountOptions, CancellationToken)

Reference

MongoCollectionBaseTDocument Class

CountAsync Overload

MongoDB.Driver Namespace