private void btnChinhSua_Click(object sender, EventArgs e)
        {
            try
            {
                string _maDG = gridView1.GetRowCellValue(gridView1.FocusedRowHandle, gridView1.Columns["MaDG"]).ToString();

                // Truyen cai MaKH vua lay dx...qua ben form NhapKhachHang.
                Forms.frmThemDocGia frmThemDG = new Forms.frmThemDocGia(_maDG);
                frmThemDG.myEvent += frm_myEvent;
                frmThemDG.ShowDialog();
            }
            catch
            {
                XtraMessageBox.Show("Bạn phải chọn dòng chưa dữ liệu", Text, MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
        }
 private void btnThem_Click_1(object sender, EventArgs e)
 {
     Forms.frmThemDocGia frmThemDG = new Forms.frmThemDocGia();
     frmThemDG.myEvent += frm_myEvent;
     frmThemDG.ShowDialog();
 }