ITcHmiSrvExtAsyncHost.UnregisterListenerAsync Method
Unregisters the specified IListener at the TwinCAT HMI server as an asynchronous operation.
          Namespace:  TcHmiSrv.Core
Assembly:  TcHmiSrvExtNet.Core (in
TcHmiSrvExtNet.Core.dll) Version: 1.3.0.0
Syntax
C#
Task UnregisterListenerAsync(
    Context context,
    IListener handler
)Parameters
| 
                   context  | 
                   Type: TcHmiSrv.Core.Context  | 
| 
                   handler  | 
                   Type: TcHmiSrv.Core.Listeners.IListener  |