DataSet(DataTable)与XML互转

    private DataSet ConvertXMLToDataSet(string xmlData)
    {
      StringReader stream = null;
      XmlTextReader reader = null;
      try
      {
        DataSet xmlDS = new DataSet();
        stream = new StringReader(xmlData);
        reader = new XmlTextReader(stream);
        xmlDS.ReadXml(reader);
        return xmlDS;
      }
      catch (Exception ex)
      {
        string strTest = ex.Message;
        return null;
      }
      finally
      {
        if (reader != null)
        reader.Close();
      }
    }