BeginEstablish Method
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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
'Declaration
Public Function BeginEstablish ( _
userCallback As AsyncCallback, _
state As Object _
) As IAsyncResult
'Usage
Dim instance As GroupChatEndpoint
Dim userCallback As AsyncCallback
Dim state As Object
Dim returnValue As IAsyncResult
returnValue = instance.BeginEstablish(userCallback, _
state)
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.