Retrieves the ChatRoomCategory for the given URI.
Assembly: Microsoft.Rtc.Collaboration.GroupChat(in Microsoft.Rtc.Collaboration.GroupChat.dll)
Syntax
Visual Basic (Declaration) |
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Public Function BeginGetChatRoomCategory ( _ categoryUri As Uri, _ userCallback As AsyncCallback, _ state As Object _ ) As IAsyncResult |
Visual Basic (Usage) |
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Dim instance As ChatRoomCategoryManagementServices Dim categoryUri As Uri Dim userCallback As AsyncCallback Dim state As Object Dim returnValue As IAsyncResult returnValue = instance. BeginGetChatRoomCategory( categoryUri, _ userCallback, state) |
C# |
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public IAsyncResult BeginGetChatRoomCategory( Uri categoryUri, AsyncCallback userCallback, Object state ) |
Parameters
- categoryUri
- Type:
System
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.
::
.
.
Uri
The category URI.
- 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.
Exceptions
Exception | Condition |
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ArgumentException |
Thrown when invalid arguments are passed. |
[Microsoft.Rtc.Collaboration.GroupChat.ChatServerConnectionException] |
Thrown when the GroupChatEndpoint is not established. |
[System.InvalidOperationException] |
Thrown when the chat server connection is not in a valid state to send the command. |
[RealTimeException] |
Thrown when the GroupChatEndpoint encounters an error communicating with the group chat server. |
Remarks
This request will be processed asynchronously. See EndGetChatRoomCategory(IAsyncResult) to complete this asynchronous operation.
You must supply the URI of the category you wish to retrieve. To retrieve the top-level category, use RootCategoryUri .