protected void btDangNhap_Click(object sender, EventArgs e) { try { string cmd = "EXEC dbo.Student_Login_Check @pass"; // select COUNT(1) OK from dbo.Admin where ID=1 and [PASSWORD]=@Password SqlParameter[] para = new SqlParameter[1]; para[0] = new SqlParameter("@pass", tbPass.Text); class_TracNghiem ob = new class_TracNghiem(); DataSet ds = ob.bindDataset(cmd, para); if (ds.Tables[0].Rows[0][0].ToString() == "0") lbTrangThai.Text = "Mật khẩu không đúng"; else if (lbID.Text != "") { HttpCookie obCookie = new HttpCookie("EXAMS"); obCookie.Value = lbID.Text; obCookie.Expires = DateTime.Today.AddDays(1); Response.Cookies.Add(obCookie); Response.Redirect("User_Exam.aspx"); } } catch { } }