>private string WriteDataSetToXMLStr(DataSet ds)
>{
>	if (ds == null) { return ""; }
>
>	MemoryStream ms = new MemoryStream();
>	ds.WriteXml(ms, XmlWriteMode.WriteSchema);
>
>	ms.Seek(0, SeekOrigin.Begin);
>	StreamReader sr = new StreamReader(ms);
>	string xml = sr.ReadToEnd();
>
>	return xml;
>}