protected void login_btn_Click(object sender, EventArgs e) { Teacher_tblDAO teacher_tbldao = new Teacher_tblDAO(); if (RadioButton1.Checked == true) { //Label3.Text=RadioButton1.Text; int count = teacher_tbldao.GetLoginInfo(new Teacher_tblDTO(username.Text, password.Text)); if (count == 1) { Session["username"] = username.Text; Response.Redirect("TeacherHome.aspx"); //Response.Write("LogIn SuccessFul"); } /* * DropDownList1.DataSource = customer_infodao.getAllChocolates(); * DropDownList1.DataTextField = "name"; * DropDownList1.DataValueField = "cus_id"; * DropDownList1.DataBind(); * DropDownList1.Items.Insert(0, "---Select---");*/ } else if (RadioButton2.Checked == true) { // Label3.Text = RadioButton2.Text; int count = student_tbldao.GetLoginInfo(new Student_tblDTO(username.Text, password.Text)); if (count == 1) { Session["username"] = username.Text; Response.Redirect("StudentHome.aspx"); //Response.Write("LogIn SuccessFul"); } } else if (RadioButton3.Checked == true) { // Label3.Text = RadioButton2.Text; int count = student_tbldao.GetLoginInfoAdmin(username.Text, password.Text); if (count == 1) { Session["username"] = username.Text; Response.Redirect("AdminHome.aspx"); //Response.Write("LogIn SuccessFul"); } } /* * DataTextField is what the user can see. * DataValueField is what you can use for identify which one is selected from DropDownList. * */ }