Dataset XML 序列化,什么是序列化

 

   ///   <summary>   
        ///   将指定DataTable转换为其等效的Xml流形式。   
        ///   </summary>   
        ///   <param   name="table">DataTable对象</param>   
        ///   <returns></returns>   
        public static string ToXmlString(DataTable table)
        {
            if (table == null)
            {
                return null;
            }

            StringBuilder content = new StringBuilder();
            StringWriter writer = new StringWriter(content);
            XmlTextWriter xmlWriter = new XmlTextWriter(writer);

            try
            {
                DataSet ds = new DataSet();
                ds.Tables.Add(table.Copy());
                ds.WriteXml(xmlWriter);

                return content.ToString();
            }
            finally
            {
                writer.Close();
                xmlWriter.Close();
            }
        }

        ///   <summary>   
        ///   将指定的Xml流转换为其等效的DataSet对象。   
        ///   </summary>   
        ///   <param   name="xmlStream">Xml流</param>   
        ///   <returns></returns>   
        public static DataSet ToDataSet(string xmlStream)
        {
            if (xmlStream == null || xmlStream.Trim().Length == 0)
            {
                return null;
            }

            StringReader reader = new StringReader(xmlStream);
            XmlTextReader xmlReader = new XmlTextReader(reader);
            try
            {
                DataSet ds = new DataSet();
                ds.ReadXml(xmlReader);
                return ds;
            }
            finally
            {
                reader.Close();
                xmlReader.Close();
            }
        }