Send a high priority message to the chat room. An alert message will be displayed within the group chat client using a different color (usually red) for emphasis. It will also, depending up on the users preferences, be announce by a bell, chime, or other sound effect. Users must first successfully join a chat room to initiate the session before a message can be sent.

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

Syntax

Visual Basic (Declaration) 
Public 
Function 
BeginSendChatMessage ( _
	
message 
As 
String, _
	
alert 
As 
Boolean, _
	
userCallback 
As 
AsyncCallback, _
	
state 
As 
Object _
) 
As 
IAsyncResult
Visual Basic (Usage) 
Dim 
instance 
As 

ChatRoomSession
Dim 
message 
As 
String
Dim 
alert 
As 
Boolean
Dim 
userCallback 
As 
AsyncCallback
Dim 
state 
As 
Object
Dim 
returnValue 
As 
IAsyncResult

returnValue = instance.
BeginSendChatMessage(
message, _
	
alert, 
userCallback, 
state)
C# 
public 
IAsyncResult 
BeginSendChatMessage(
	
string 
message,
	
bool 
alert,
	
AsyncCallback 
userCallback,
	
Object 
state
)

Parameters

message
Type: System . . :: . . String

The message.

alert
Type: System . . :: . . Boolean

If true , send this message as an alert; otherwise send the message with normal priority.

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
ArgumentException

Thrown when invalid arguments are passed.
[Microsoft.Rtc.Collaboration.GroupChat.ChatServerConnectionException]

Thrown when the GroupChatEndpoint is not established.
[Microsoft.Rtc.Collaboration.GroupChat.ChatRoomSessionStateException]

Thrown when the ChatRoomSession is not joined.
[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 EndSendChatMessage(IAsyncResult) to complete this asynchronous operation.

See Also