protected void Page_Load(object sender, EventArgs e) { //Thong tin nguoi dung NGUOIDUNG a = new NGUOIDUNG(); a.MaNguoiDung = 1; Session["NGUOIDUNG"] = a; if (!IsPostBack) { if (Request.QueryString["id"] != null) { //lay ma int mabaihat = int.Parse(Request.QueryString["id"]); //lay thong tin va load len cac textbox BUSBaiHat BUSBaiHat = new BUSBaiHat(); BAIHAT lpDTO = BUSBaiHat.TimKiem(mabaihat); this.txtmabaihat.Text = Convert.ToString(lpDTO.MaBaiHat); this.txttenbaihat.Text = lpDTO.TenBaiHat; this.txtlinkbaihat.Text = lpDTO.LinkBaiHat; } } }