/// <summary>
        /// Display a touch keyboard if the user touches the second password box.
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void ReEnterPasswordBox_TouchUp(object sender, TouchEventArgs e)
        {
            GUI.OnScreenKeyboard.OnScreenKeyboard keyboard = new GUI.OnScreenKeyboard.OnScreenKeyboard(GUI.OnScreenKeyboard.OnScreenKeyboard.InputType.PASSWORD, Window.GetWindow(this), ReEnterPasswordBox.Password);
            bool?dialogResult = keyboard.ShowDialog();

            if (dialogResult != null && (bool)dialogResult)
            {
                ReEnterPasswordBox.Password = keyboard.GetResult();
            }
        }
        /// <summary>
        /// Display a touch keyboard if the user touches the username box.
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void UsernameBox_TouchUp(object sender, TouchEventArgs e)
        {
            GUI.OnScreenKeyboard.OnScreenKeyboard keyboard = new GUI.OnScreenKeyboard.OnScreenKeyboard(GUI.OnScreenKeyboard.OnScreenKeyboard.InputType.TEXT, Window.GetWindow(this), UsernameBox.Text);
            bool?dialogResult = keyboard.ShowDialog();

            if (dialogResult != null && (bool)dialogResult)
            {
                UsernameBox.Text       = keyboard.GetResult();
                UsernameBox.CaretIndex = UsernameBox.Text.Length;
            }
        }