protected void btnlogin_Click(object sender, EventArgs e) { username = uname.Text; password = pword.Text; CsUserlist userinfo = new CsUserlist(username, password); if (ConnectionClass.SignIn(userinfo)) { FormsAuthentication.RedirectFromLoginPage(username, CheckBox.Checked); } else { Response.Write("<script type='text/javascript'>"); Response.Write("alert('Please check your username and password');"); Response.Write("</script>"); } }