kxs-activityap/AppStart/RelationClass.cs

using System;
using System.Collections.Generic;
using System.Linq;
using MySystem.MainModels;

namespace MySystem
{
    public class RelationClass
    {
        public static string GetUsersInfo(int key)
        {
            Users item = UsersDbconn.Instance.Get(key) ?? new Users();
            return item.RealName;
        }
    }
}