/// <summary>
    /// 1~2|3~4 与DataTable的相互转化,colName列名集合
    /// </summary>
    /// <param name="ss"></param>
    /// <param name="colName"></param>
    /// <returns></returns>
    public DataTable ConvertStrToDt(string ss, List<string> colName)
    {
        DataTable dt = new DataTable();

        string[] s1 = ss.Split('|');
        for (int i = 0; i <= s1.Length - 1; i++)
        {
            string[] s2 = s1[i].Split('~');
            DataRow drow = dt.NewRow();

            for (int j = 0; j <= colName.Count - 1; j++)
            {
                if (i == 0)
                    dt.Columns.Add(colName[j]);
                drow[colName[j]] = s2[j];
            }
            dt.Rows.Add(drow);
        }
        return dt;
    }