ASCOM.cam8_v051.cam_settings.OffsetTextBox_TextChanged C# (CSharp) Method

        private void OffsetTextBox_TextChanged(object sender, EventArgs e)
        {
            bool ConvRes;
            short ValNum;
            //Settings are correct?
            ConvRes = short.TryParse(OffsetTextBox.Text, out ValNum);
            if ((ConvRes == false) || (ValNum < -127) || (ValNum > 127))
            {
                OffsetTrackBar.Value = MinOffset;
                OffsetTextBox.Text = MinOffset.ToString();
                return;
            }
            OffsetTrackBar.Value = short.Parse(OffsetTextBox.Text);
        }