protected void m_grid_RowCommand(object sender, GridViewCommandEventArgs e)
        {
            try
            {
                string commandName = e.CommandName;
                GridViewRow row = m_grid.FooterRow;
                if (commandName == "Insert")
                {
                    clsPhongBan objPhongBan= new clsPhongBan();

                    string TenPhongBanCha = ((DropDownList)row.FindControl("txtIPhongBanCha")).Text;

                    string TenDonVi = ((DropDownList)row.FindControl("txtIDonVi")).Text;
                    string TenPhongBan = ((TextBox)row.FindControl("txtITenPhongBan")).Text;
                    string DiaChi = ((TextBox)row.FindControl("txtIDiaChi")).Text;
                    string ChucDanhPhuTrach = ((TextBox)row.FindControl("txtIChucDanhPhuTrach")).Text;
                    string NhanVienPhuTrach = ((DropDownList)row.FindControl("txtITenDayDu")).Text;

                    objPhongBan.PhongBan_Parent_Id = TenPhongBanCha;
                    objPhongBan.DonVi_Id = TenDonVi;
                    objPhongBan.TenPhongBan = TenPhongBan;
                    objPhongBan.DiaChi = DiaChi;
                    objPhongBan.NhanVien_PhuTrach_Id = NhanVienPhuTrach;
                    objPhongBan.ChucDanhPhuTrach = ChucDanhPhuTrach;

                    int _result = objPhongBan.Insert();
                    if (_result >= 1)
                    {
                        ltlAnnouncement.Text = "Thêm mới phòng ban '" + TenPhongBan + "' thành công!";
                    }
                    if (_result == -1)
                    {
                        ltlAnnouncement.Text = "Phòng ban '" + TenPhongBan + "' đã tồn tại, bạn nên kiểm tra lại!";
                    }
                    if (_result == 0)
                    {
                        ltlAnnouncement.Text = "Có lỗi trong quá trình thêm mới!";
                    }
                    bindData(-1);
                }
            }
            catch (Exception ex)
            {
                ltlAnnouncement.Text = "Khong them moi duoc du lieu. Vui long lien he voi quan tri<br>" + ex.Message;
            }
        }