DataSet与string转换

        static public DataSet DataSetFromString(string s)

        {

            if (string.IsNullOrEmpty(s)) { return null; }



            byte[] bytes = Encoding.UTF8.GetBytes(s);



            Stream inStream = null;

            DataSet ds = new DataSet();

            try

            {

                inStream = new MemoryStream(bytes); 

                ds.ReadXml(inStream);

            }

            finally

            {

                inStream.Close();

            }

            return ds;

        }



        static public string GetStringFromTable(DataSet ds)

        {

            XmlDataDocument doc = new XmlDataDocument(ds);

            return ds.GetXml();;

        }