ReferNotifier.BeginSetState Method (ReferState, AsyncCallback, Object)
Sets the Refer state. This will result in sending Notification to the referrer.
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 method to be called when the asynchronous operation is completed.
- state
Type: System.Object
A user-provided object that distinguishes this particular asynchronous operation from other asynchronous operations.
Return Value
Type: System.IAsyncResult
An IAsyncResult that references the asynchronous operation.
Exceptions
| Exception | Condition |
|---|---|
| InvalidOperationException | Thrown when the session is not in a valid session state to set the refer state. |