protected void btnLuu_Click(object sender, EventArgs e)
        {
            DTOKhachHang dtoKH = new DTOKhachHang();

            dtoKH.TenKH    = txtTenKH.Text;
            dtoKH.DiaChiKH = txtDiaChi.Text;
            dtoKH.SdtKH    = txtSdt.Text;

            DTOLoaiKH dtoLoaiKH = new DTOLoaiKH();

            dtoLoaiKH.MaLKH  = int.Parse(ddLoaiKH.SelectedValue);
            dtoLoaiKH.TenLKH = ddLoaiKH.SelectedItem.ToString();
            dtoKH.dtoLoaiKH  = dtoLoaiKH;

            XuLy_TiepNhanDonHang control = new XuLy_TiepNhanDonHang();

            //        DAO_Entity daoKH = new DAO_Entity();
            if (KiemTraNhap() == "")
            {
                control.ThemKH(dtoKH);
                Response.Redirect("~/QLBoPhan_TiepXucKH/DSKhachHang.aspx");
            }
            else
            {
                ThemKH.Visible = true;
                lbLoi.Text     = KiemTraNhap();
            }
        }
        protected void btnLuuKH_Click(object sender, EventArgs e)
        {
            DTOLoaiKH dtoLKH = new DTOLoaiKH();

            dtoLKH.TenLKH = txtTenLKH.Text;

            DAO_Entity daoLKH = new DAO_Entity();

            if (KiemTraNhap() == "")
            {
                daoLKH.ThemLoaiKH(dtoLKH);
                Response.Redirect("~/QLBophan_Admin/QLCauHinhLoaiKH/LoaiKH.aspx");
            }
            else
            {
                ThemLoaiKH.Visible = true;
                lbLoi.Text         = KiemTraNhap();
            }
        }