XML conversion and DataTable

1.DataTable turn XML  

     

   DataTableToXml #region 
        /// <Summary> 
        /// convert an object into XML string DataTable 
        /// </ Summary> 
        /// <param name = "DS"> the DataSet Object </ param> 
        /// <Returns> XML string </ Returns> 
        public static string DataTableToXml (the DataTable dt, string sName) 
        { 
            IF (dt = null!) 
            { 
                the MemoryStream ms = null; 
                the XmlTextWriter XmlWt = null; 
                the try 
                { 
                    ms = the MemoryStream new new (); 
                    // The ms examples of XmlWt 
                    XmlWt the XmlTextWriter new new = (MS, System.Text.Encoding.Unicode);
                    // Get the data ds
                    dt.TableName = Sql.IsEmptyString(sName) ? "dt2xml" : sName;
                    dt.WriteXml(XmlWt, XmlWriteMode.WriteSchema);
                    int count = (int)ms.Length;
                    byte[] temp = new byte[count];
                    ms.Seek(0, SeekOrigin.Begin);
                    ms.Read(temp, 0, count);
                    //返回Unicode编码的文本
                    System.Text.UnicodeEncoding ucode = new System.Text.UnicodeEncoding();
                    string returnValue = ucode.GetString(temp).Trim();
                    return returnValue;
                }
                catch (System.Exception ex)
                {
                    throw ex;
                }
                finally
                {
                    //释放资源
                    if (XmlWt != null)
                    {
                        XmlWt.Close();
                        ms.Close();
                        ms.Dispose();
                    }
                }
            }
            else
            {
                return "";
            }
        }
        #endregion

2.XML turn DataSet

#region Xml To DataSet
        public static DataSet XmlToDataSet(string xmlString)
        {
            XmlDocument xmldoc = new XmlDocument();
            xmldoc.LoadXml(xmlString);
            StringReader stream = null;
            XmlTextReader reader = null;
            try
            {
                DataSet xmlDS = new DataSet();
                stream = new StringReader(xmldoc.InnerXml);
                reader = new XmlTextReader(stream);
                xmlDS.ReadXml(reader);
                reader.Close();
                return xmlDS;
            }
            catch (System.Exception ex)
            {
                reader.Close();
                throw ex;
            }
        }
        #endregion