Locks the joined conference.

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

Syntax

Visual Basic (Declaration) 
Public 
Function 
BeginLockConference ( _
	
userCallback 
As 
AsyncCallback, _
	
state 
As 
Object _
) 
As 
IAsyncResult
C# 
public 
IAsyncResult 
BeginLockConference(
	
AsyncCallback 
userCallback,
	
Object 
state
)
Visual C++ 
public:
IAsyncResult^ 
BeginLockConference(
	
AsyncCallback^ 
userCallback, 
	
Object^ 
state
)
JavaScript 
function 
beginLockConference(
userCallback, 
state);

Parameters

userCallback
Type: AsyncCallback
The method to be called when the asynchronous operation is completed.
state
Type: Object
A user-provided object that distinguishes this particular asynchronous operation from other asynchronous operations.

Return Value

An IAsyncResult that references the asynchronous operation.

Remarks

This operation is allowed by the server for conference leaders only. Any attendees joining a conference after it gets locked are placed into the conference lobby. Participants placed in the conference lobby are not visible to applications built on UCMA 2.0. However, if admitted into the conference by a conference leader, they become visible to the application.

Exceptions

Exception Condition
InvalidOperationException Thrown when the operation is not valid at the given conference session state.

See Also