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BeginJoin Method (ChatRoomSummary, AsyncCallback, Object)

This content is no longer actively maintained. It is provided as is, for anyone who may still be using these technologies, with no warranties or claims of accuracy with regard to the most recent product version or service release.

Join the chat room indicated by the given ChatRoomSession. To join a chat room, a user must be an authorized member. Only one active ChatRoomSession may exist for any given chat room per endpoint.

Namespace:  Microsoft.Rtc.Collaboration.GroupChat
Assembly:  Microsoft.Rtc.Collaboration.GroupChat (in Microsoft.Rtc.Collaboration.GroupChat.dll)

public IAsyncResult BeginJoin(
	ChatRoomSummary chatRoomSummary,
	AsyncCallback userCallback,
	Object state


Type: Microsoft.Rtc.Collaboration.GroupChat.ChatRoomSummary
The chat room summary.
Type: System.AsyncCallback
The method to be invoked when this asynchronous operation completes.
Type: System.Object
An object to be passed back to the callback.

Return Value

Type: System.IAsyncResult
An IAsyncResult that references this operation.


Thrown when invalid arguments are passed.


Thrown when the session is already joined.


Thrown when the GroupChatEndpoint is not established.


Thrown when the GroupChatEndpoint encounters an error communicating with the group chat server.

This request will be processed asynchronously. See EndJoin(IAsyncResult) to complete this asynchronous operation.