public ActionResult SignUpCheck()
        {
            LoadIds();
            string checkName = ids["checkName"];

            switch (checkName)
            {
            case "emailExist":
            {
                SqlStoredProcedures sqlSP = new SqlStoredProcedures();
                return(Content(Convert.ToString(sqlSP.UserEmailExist(ids["email"]))));
            }

            case "usernameExist":
            {
                SqlStoredProcedures sqlSP = new SqlStoredProcedures();
                return(Content(Convert.ToString(sqlSP.UserUsernameExist(ids["username"]))));
            }

            default:
            {
                return(Content("null"));
            }
            }
        }