IMongoClientExtensionsWatchAsync Method (IMongoClient, IClientSessionHandle, ChangeStreamOptions, CancellationToken) | 
 
            Watches changes on all collections in all databases.
            
 
    Namespace: 
   MongoDB.Driver
    Assembly:
   MongoDB.Driver (in MongoDB.Driver.dll) Version: 2.19.1+3a2a09dd959482f665ffbb5df2557ec541597af4
Syntaxpublic static Task<IChangeStreamCursor<ChangeStreamDocument<BsonDocument>>> WatchAsync(
	this IMongoClient client,
	IClientSessionHandle session,
	ChangeStreamOptions options = null,
	CancellationToken cancellationToken = default
)
<ExtensionAttribute>
Public Shared Function WatchAsync ( 
	client As IMongoClient,
	session As IClientSessionHandle,
	Optional options As ChangeStreamOptions = Nothing,
	Optional cancellationToken As CancellationToken = Nothing
) As Task(Of IChangeStreamCursor(Of ChangeStreamDocument(Of BsonDocument)))
[<ExtensionAttribute>]
static member WatchAsync : 
        client : IMongoClient * 
        session : IClientSessionHandle * 
        ?options : ChangeStreamOptions * 
        ?cancellationToken : CancellationToken 
(* Defaults:
        let _options = defaultArg options null
        let _cancellationToken = defaultArg cancellationToken new CancellationToken()
*)
-> Task<IChangeStreamCursor<ChangeStreamDocument<BsonDocument>>> 
Parameters
- client
 - Type: MongoDB.DriverIMongoClient
The client. - session
 - Type: MongoDB.DriverIClientSessionHandle
The session. - options (Optional)
 - Type: MongoDB.DriverChangeStreamOptions
The options. - cancellationToken (Optional)
 - Type: System.ThreadingCancellationToken
The cancellation token. 
Return Value
Type: 
TaskIChangeStreamCursorChangeStreamDocumentBsonDocument
            A change stream.
            
Usage Note
In Visual Basic and C#, you can call this method as an instance method on any object of type 
IMongoClient. 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