protected void submitBtn_Click(object sender, EventArgs e) { GeetestLib geetest = GeetestLib.getGtSession(Session); int gt_server_status_code = GeetestLib.getGtServerStatusSession(Session); String result = ""; if (gt_server_status_code == 1) { result = geetest.enhencedValidateRequest(Request); } else { result = geetest.failbackValidateRequest(Request); } Response.Write(result); }