protected void Page_Load(object sender, EventArgs e)
        {
            try
            {
                DTOKhachHang dto   = new DTOKhachHang();
                DAO_Entity   daokh = new DAO_Entity();

                XuLy_TiepNhanDonHang control = new XuLy_TiepNhanDonHang();
                control.LayDSKhachHang();

                List <DTOKhachHang> Dskh = daokh.TaoDSKH();
                GridDSKH.DataSource = Dskh;
                GridDSKH.DataBind();
            }
            catch (Exception)
            {
                Response.Write("<script>alert('Loi tai du lieu!')</script>");
            }
            ThemKH.Visible = false;


            if (IsPostBack == false)
            {
                List <DTOLoaiKH> dsLKH = new List <DTOLoaiKH>();
                DAO_Entity       daoKH = new DAO_Entity();
                dsLKH = daoKH.LayDSLKH();
                //hien thi ten loai KH ra dropdownlist
                ddLoaiKH.DataTextField = "TenLKH"; //TenLKH la thuoc tinh trong DTOLoaiKH
                //truyen dl theo ma loai
                ddLoaiKH.DataValueField = "MaLKH"; //MaLKH la thuoc tinh trong DTOLoaiKH
                ddLoaiKH.DataSource     = dsLKH;
                ddLoaiKH.DataBind();
            }
        }
 protected void Page_Load(object sender, EventArgs e)
 {
     try
     {
         DAO_Entity          daokh = new DAO_Entity();
         List <DTOKhachHang> dsKH  = daokh.TaoDSKH();
         GridKH.DataSource = dsKH;
         GridKH.DataBind();
     }
     catch (Exception)
     {
         Response.Write("<script>alert('Loi tai du lieu!')</script>");
     }
 }
        public void LayDSKhachHang()
        {
            DAO_Entity dao = new DAO_Entity();

            dao.TaoDSKH();
        }