请问在web api中如何实现post方式的查询？

[weixin_38063619]

   public IHttpActionResult GetTcUserNew  (string uid, string PassWord, string callback = "")
        {


            string sql = "select uid,uname,ustate from tc_user_new where uid='" + uid + "' and pwdcompare('" + PassWord + "',upass,0)=1";
            DataTable Data = PublicFunction.GetStudyData(sql);

            //查询表达式的写法
            //IEnumerable<TcUserNew>
            var TcUserNew =
               from dt1 in Data.AsEnumerable() select new TcUserNew { uid = Convert.ToDecimal(dt1["uid"]), uname = dt1["uname"].ToString(), ustate = Convert.ToInt16(dt1["ustate"]) };
            if (TcUserNew == null)
                return NotFound();
            else
                return Ok(TcUserNew);
        }
请问是不是加一个[HttpPost] 就可以了？不过我使用安卓的xutil访问不成功