Create Dataset from XML

Below is the function to Create DataSet from XML String:

public DataSet ConvertXMLToDataSet(string xmlData)
        {
            StringReader stream = null;
            XmlTextReader reader = null;
            try
            {
                DataSet xmlDS = new DataSet();
                stream = new StringReader(xmlData);
                // Load the XmlTextReader from the stream
                reader = new XmlTextReader(stream);
                // xmlDS.Tables.Add("Data");
                xmlDS.ReadXml(reader);
                return xmlDS;
            }
            catch (Exception ex)
            {
                return null;
            }
            finally
            {
                if (reader != null) reader.Close();
            }
        }