public static DataTable DataTableShow()
        {
            DataTable dt = new DataTable();
            dt.Columns.Add("姓名", typeof(string));
            dt.Columns.Add("年龄", typeof(string));

            DataRow dr = null;

            dr = dt.NewRow();
            dr["姓名"] = "kitty";
            dr["年龄"] = "5";
            dt.Rows.Add(dr);

            dr = dt.NewRow();
            dr["姓名"] = "";
            dr["年龄"] = "";
            dt.Rows.Add(dr);

            dt.Rows[1]["姓名"] = "我有姓名了！";
            dt.Rows[1]["年龄"] = "我有年龄了！";

            return dt;
        }