ASCOM.cam8_v05.cam_settings.GainTextBox_TextChanged C# (CSharp) Метод

        private void GainTextBox_TextChanged(object sender, EventArgs e)
        {
            bool ConvRes;
            short ValNum;
            //Settings are correct?
            ConvRes = short.TryParse(GainTextBox.Text, out ValNum);
            if ((ConvRes == false) || (ValNum < 0) || (ValNum > 63))
            {
                GainTrackBar.Value = MinGain;
                GainTextBox.Text = MinGain.ToString();
                return;
            }
            GainTrackBar.Value = short.Parse(GainTextBox.Text);
        }