private void C1FlexGrid1_BeforeDoubleClick(object sender, C1.Win.C1FlexGrid.BeforeMouseDownEventArgs e)
        {
            if (c1FlexGrid1.Col == 1)
            {
                //cancel the default double-click behavior
                e.Cancel = true;

                //show custom form
                Form N_Form = new Form();
                N_Form.Show();
            }
        }