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IMongoCollectionTDocumentCountAsync Method (IClientSessionHandle, FilterDefinitionTDocument, CountOptions, CancellationToken)

Counts the number of documents in the collection.

Namespace:  MongoDB.Driver
Assembly:  MongoDB.Driver (in MongoDB.Driver.dll) Version: 2.6.0+Branch.origin/v2.6.x.Sha.593796a7b35dc59243383bcc684de296a5468f2e
Syntax
Task<long> CountAsync(
	IClientSessionHandle session,
	FilterDefinition<TDocument> filter,
	CountOptions options = null,
	CancellationToken cancellationToken = null
)

Parameters

session
Type: MongoDB.DriverIClientSessionHandle
The session.
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.
See Also