Epicor_Integration.Item_Master.trackserial_CheckedChanged C# (CSharp) Méthode

        private void trackserial_CheckedChanged(object sender, EventArgs e)
        {
            if (trackserial.Checked)
                bflush_chk.Checked = false;

            if (trackserial.Checked)
            {
                bflush_chk.Checked = false;

                string prefix = "";

                if (Partnumber_txt.Text.Substring(0, 3) == "201")
                    prefix = "BAL";
                if (Partnumber_txt.Text.Substring(0, 3) == "404")
                    prefix = "FLO";

                SerialMask_Master SM = new SerialMask_Master(prefix);

                SM.ShowDialog();

                if (SM.DialogResult == DialogResult.Cancel)
                    trackserial.Checked = false;
                else
                {
                    SerialPrefix = SM.Prefix;

                    SerialMask = SM.Mask;
                }
            }
        }