private void btnThem_Click(object sender, EventArgs e)
        {
            frmThanhLy frm = new frmThanhLy();

            frm.ShowInTaskbar = false;
            frm.isInsert      = true;
            frm.LamMoi_Cick  += new EventHandler(HienThi_Event);
            frm.ShowDialog();
        }
        private void msds_DoubleClick(object sender, EventArgs e)
        {
            if (gridView1.RowCount <= 0)
            {
                return;
            }
            frmThanhLy frm = new frmThanhLy();

            frm.ShowInTaskbar = false;
            frm.isInsert      = false;
            frm.SoPTL         = gridView1.GetRowCellValue(gridView1.FocusedRowHandle, gridView1.Columns[0]).ToString();
            frm.LamMoi_Cick  += new EventHandler(HienThi_Event);
            frm.ShowDialog();
        }