DataTab转换XML XML转换DataTable 的类

public string ConvertDataTableToXML(DataTable xmlDS)   

        {   

            MemoryStream stream = null;   

            XmlTextWriter writer = null;   

            try  

            {   

                stream = new MemoryStream();   

                writer = new XmlTextWriter(stream, Encoding.Default);   

                xmlDS.WriteXml(writer);   

                int count = (int)stream.Length;   

                byte[] arr = new byte[count];   

                stream.Seek(0, SeekOrigin.Begin);   

                stream.Read(arr, 0, count);   

                return System.Text.Encoding.GetEncoding("gb2312").GetString(arr).Trim();   

            }   

            catch  

            {   

                return String.Empty;   

            }   

            finally  

            {   

                if (writer != null) writer.Close();   

            }   

        }   

  

        public DataSet ConvertXMLToDataSet(string xmlData)   

        {   

            StringReader stream = null;   

            XmlTextReader reader = null;   

            try  

            {   

                DataSet xmlDS = new DataSet();   

                stream = new StringReader(xmlData);   

                reader = new XmlTextReader(stream);   

                xmlDS.ReadXml(reader);   

                return xmlDS;   

            }   

            catch (Exception ex)   

            {   

                string strTest = ex.Message;   

                return null;   

            }   

            finally  

            {   

                if (reader != null)   

                    reader.Close();   

            }   

        }  





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