public void MessageToServer(string message)
{
IMyMessageCallBack callBack = OperationContext.Current.GetCallbackChannel<IMyMessageCallBack>();
Console.WriteLine("message from the client:" + message);
callBack.OnCallBack("message from server");
Task.Factory.StartNew(new Action<object>(TaskCallBack), callBack);
}
private async void TaskCallBack(object sender)
{
IMyMessageCallBack callBack = sender as IMyMessageCallBack;
for(int i = 0;i<10;i++)
{
callBack.OnCallBack("Message_" + i);
await Task.Delay(1000);
}
}