/// <summary>
        /// 得到一个对象实体
        /// </summary>
        public Models.Beans.User GetModel(int userid)
        {

            StringBuilder strSql = new StringBuilder();
            strSql.Append("select userid,username,realname,password,phone,enable,createtime,modifytime,sex,address, roletype,createtime ,createman,modifytime,modifyman from t_user ");
            strSql.Append(" where userid=@userid");
            MySqlParameter[] parameters = {
					new MySqlParameter("@userid", MySqlDbType.Int32)
                                          };
            parameters[0].Value = userid;

            Models.Beans.User model = new Models.Beans.User();
            DataSet ds = MySqlHelper.Query(strSql.ToString(), parameters);
            if (ds.Tables[0].Rows.Count > 0)
            {
                if (ds.Tables[0].Rows[0]["userid"].ToString() != "")
                {
                    model.userid = int.Parse(ds.Tables[0].Rows[0]["userid"].ToString());
                }
                model.username = ds.Tables[0].Rows[0]["username"].ToString();
                model.password = ds.Tables[0].Rows[0]["password"].ToString();
                model.phone = ds.Tables[0].Rows[0]["phone"].ToString();
                if (ds.Tables[0].Rows[0]["enable"].ToString() != "")
                {
                    model.enable = int.Parse(ds.Tables[0].Rows[0]["enable"].ToString());
                }
                model.createtime= DateTime.Parse( ds.Tables[0].Rows[0]["createtime"].ToString());
                model.modifytime= DateTime.Parse( ds.Tables[0].Rows[0]["modifytime"].ToString());
                model.sex = ds.Tables[0].Rows[0]["sex"].ToString();
                model.address = ds.Tables[0].Rows[0]["address"].ToString();
                model.roletype = ds.Tables[0].Rows[0]["roletype"].ToString();
                model.createman = ds.Tables[0].Rows[0]["createman"].ToString();
                model.modifyman = ds.Tables[0].Rows[0]["modifyman"].ToString();
                model.realname = ds.Tables[0].Rows[0]["realname"].ToString();
                return model;
            }
            else
            {
                return null;
            }
        }
        public JsonResult GetUserList(String name, int pageidx = 0, int pagesize = 20)
        {
            ContractMvcWeb.Models.AccountContext db = new Models.AccountContext();
            ContractMvcWeb.Models.Beans.User query = new Models.Beans.User();
            query.username = name;
            query.realname = name;
            query.phone = name;

            Models.Beans.Page<ContractMvcWeb.Models.Beans.User> list = db.QueryByPage(query, pageidx, pagesize);

            Models.Result result = new Result((int)ResultCodeEnum.Success, "", list);

            JsonResult jsonresult = new JsonResult();
            jsonresult.Data = result;
            jsonresult.JsonRequestBehavior = JsonRequestBehavior.AllowGet;
            return jsonresult;
        }