BeginSetState Method (ReferState, AsyncCallback, Object)
Sets the Refer state.
Namespace: Microsoft.Rtc.Signaling
Assembly: Microsoft.Rtc.Collaboration (in Microsoft.Rtc.Collaboration.dll)
Syntax
'Declaration
Public MustOverride Function BeginSetState ( _
referState As ReferState, _
userCallback As AsyncCallback, _
state As Object _
) As IAsyncResult
'Usage
Dim instance As ReferNotifier
Dim referState As ReferState
Dim userCallback As AsyncCallback
Dim state As Object
Dim returnValue As IAsyncResult
returnValue = instance.BeginSetState(referState, _
userCallback, state)
public abstract IAsyncResult BeginSetState(
ReferState referState,
AsyncCallback userCallback,
Object state
)
Parameters
- referState
Type: Microsoft.Rtc.Signaling..::..ReferState
The refer State value to set.
- userCallback
Type: System..::..AsyncCallback
The callback to be invoked when [SetState] is done.
- state
Type: System..::..Object
The state to be passed back to the callback.
Return Value
Type: System..::..IAsyncResult
An [IAsyncResult] that references this operation.
Exceptions
| Exception | Condition |
|---|---|
| InvalidOperationException | Thrown when the session is not in a valid session state to set the Refer state. |
Remarks
This results in sending Notification to the referrer.