public void CheckVerifyCode(string verifyCode, HttpContext context) { string sessionVerifyCode = context.Session["VerifyCode"].ToString(); Dictionary <string, bool> ds = new Dictionary <string, bool>(); if (VerifyCode.ToUpper(sessionVerifyCode) == VerifyCode.ToUpper(verifyCode)) { ds.Add("valid", true); } else { ds.Add("valid", false); } context.Response.Write(JsonConvert.SerializeObject(ds)); }