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///方法
 public static List<FeesItemInfo> selectAll()
        {
            List<FeesItemInfo> list = new List<FeesItemInfo>();
            string sql = "select * from FeesItem";
            SqlConnection cn;
            using (SqlDataReader sr = SQLHelper.ExecuteReader(out cn, CommandType.Text, sql))
            {
                while (sr.Read())
                {
                    FeesItemInfo info = new FeesItemInfo();
                    info.Id = Convert.ToInt32(sr["id"]);
                    info.Itemname = sr["itemname"].ToString();
                    list.Add(info);
                }
            }
            return list;
        }
///页面
 public int pageIndex
    {
        get
        {
            if (ViewState["pageIndex"]