List Ilist用法几个项目实例

总是用的不熟练慢慢的总结篇

 //获取的用户ID
        public  List<int> GetUserId(int Id)
        {
           

            List<int> userId = new List<int>(); 
            SqlDataReader dr = BaseDAL.GetRecord(table, field, where, null);
            while (dr.Read())
            {
                userId.Add(dr.GetInt32(0));
            }
            dr.Close();
            return userId;
        }