protected void login_btn_Click(object sender, EventArgs e) { var myUser = new customer { username = user_name.Text, pass = pass.Text }; functions login_fun = new functions(); if (login_fun.login(myUser) == 0) { alert.Attributes.Remove("hidden"); } else if (login_fun.login(myUser) == 1) { Response.Redirect("buyerPage.aspx"); } else { Response.Redirect("sellerPage.aspx"); } }