object serialization example

private string SerializeAnObject(object obj)
        {

            System.Xml.XmlDocument doc;
            System.Xml.Serialization.XmlSerializer serializer;
            System.IO.MemoryStream stream;
            doc = new XmlDocument();
            serializer = new System.Xml.Serialization.XmlSerializer(obj.GetType());
            stream = new System.IO.MemoryStream();
            try
            {
                serializer.Serialize(stream, obj);
                stream.Position = 0;
                doc.Load(stream);
                return doc.InnerXml;

            }
            catch
            {
                throw;
            }
            finally
            {
                stream.Close();
                stream.Dispose();
            }
        }