public async static Task<MessageBoxResult> Show(string messageBoxText, string caption, MessageBoxButton button)
        {
            MessageBox box = new MessageBox();

            var result = await box.ShowMessage(messageBoxText, caption, MessageBoxButton.OKCancel);

            return getResult(result);
        }
 public async static Task<IUICommand> Show(string message)
 {
     MessageBox msg = new MessageBox();
     return await msg.ShowMessage(message);
 }