| IMongoCollectionExtensionsUpdateOneAsyncTDocument Method (IMongoCollectionTDocument, IClientSessionHandle, ExpressionFuncTDocument, Boolean, UpdateDefinitionTDocument, UpdateOptions, CancellationToken) | 
 
            Updates a single document.
            
 
    Namespace: 
   MongoDB.Driver
    Assembly:
   MongoDB.Driver (in MongoDB.Driver.dll) Version: 2.5.0+57.Branch.master.Sha.6a4e00a2d91090c65a9b11364b9ebfdb9c7da076
 Syntax
Syntaxpublic static Task<UpdateResult> UpdateOneAsync<TDocument>(
	this IMongoCollection<TDocument> collection,
	IClientSessionHandle session,
	Expression<Func<TDocument, bool>> filter,
	UpdateDefinition<TDocument> update,
	UpdateOptions options = null,
	CancellationToken cancellationToken = null
)
<ExtensionAttribute>
Public Shared Function UpdateOneAsync(Of TDocument) ( 
	collection As IMongoCollection(Of TDocument),
	session As IClientSessionHandle,
	filter As Expression(Of Func(Of TDocument, Boolean)),
	update As UpdateDefinition(Of TDocument),
	Optional options As UpdateOptions = Nothing,
	Optional cancellationToken As CancellationToken = Nothing
) As Task(Of UpdateResult)
[<ExtensionAttribute>]
static member UpdateOneAsync : 
        collection : IMongoCollection<'TDocument> * 
        session : IClientSessionHandle * 
        filter : Expression<Func<'TDocument, bool>> * 
        update : UpdateDefinition<'TDocument> * 
        ?options : UpdateOptions * 
        ?cancellationToken : CancellationToken 
(* Defaults:
        let _options = defaultArg options null
        let _cancellationToken = defaultArg cancellationToken null
*)
-> Task<UpdateResult> 
Parameters
- collection
- Type: MongoDB.DriverIMongoCollectionTDocument
 The collection.
- session
- Type: MongoDB.DriverIClientSessionHandle
 The session.
- filter
- Type: System.Linq.ExpressionsExpressionFuncTDocument, Boolean
 The filter.
- update
- Type: MongoDB.DriverUpdateDefinitionTDocument
 The update.
- options (Optional)
- Type: MongoDB.DriverUpdateOptions
 The options.
- cancellationToken (Optional)
- Type: System.ThreadingCancellationToken
 The cancellation token.
Type Parameters
- TDocument
- The type of the document.
Return Value
Type: 
TaskUpdateResult
            The result of the update operation.
            
Usage Note
In Visual Basic and C#, you can call this method as an instance method on any object of type 
IMongoCollectionTDocument. 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
See Also