Establish a connection with the Group Chat server.

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

Syntax

Visual Basic (Declaration) 
Public 
Function 
BeginEstablish ( _
	
userCallback 
As 
AsyncCallback, _
	
state 
As 
Object _
) 
As 
IAsyncResult
Visual Basic (Usage) 
Dim 
instance 
As 

GroupChatEndpoint
Dim 
userCallback 
As 
AsyncCallback
Dim 
state 
As 
Object
Dim 
returnValue 
As 
IAsyncResult

returnValue = instance.
BeginEstablish(
userCallback, _
	
state)
C# 
public 
IAsyncResult 
BeginEstablish(
	
AsyncCallback 
userCallback,
	
Object 
state
)

Parameters

userCallback
Type: System . . :: . . AsyncCallback

The method to be invoked when this asynchronous operation completes.

state
Type: System . . :: . . Object

An object to be passed back to the callback.

Return Value

Type: System . . :: . . IAsyncResult

An IAsyncResult that references this operation.

Exceptions

Exception Condition
[Microsoft.Rtc.Collaboration.GroupChat.ChatServerConnectionException]

Thrown if the Lookup Server URI is invalid.
[RealTimeException]

Thrown if the session encounters an error communicating with Office Communications Server.
ArgumentException

Thrown when invalid arguments are passed.
[System.InvalidOperationException]

Thrown when the endpoint is not in a valid state. An endpoint can only be established once, and cannot be reused after being terminated.

Remarks

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

See Also