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   <filelist count="4" sourcepath="./update/">
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    <item name="CustomerApplication.exe" size="">
     <value />
    </item>
    <item name="Interop.SHDocVw.dll" size="">
     <value />
    </item>
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              [WebMethod(Description="È¡µÃ¸üа汾")]
              Public string GetVer()
              {
                     XmlDocument doc = new XmlDocument();
                     doc.Load(Server.MapPath("update.xml"));
                     XmlElement root = doc.DocumentElement;
                     return root.SelectSingleNode("version").Inertest;
              }
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              [WebMethod(Description="ÔÚÏ߸üÐÂÈí¼þ")]
              [SoapHeader("sHeader")]
              public System.Xml.XmlDocument GetUpdateData()
              {
                     //ÑéÖ¤Óû§ÊÇ·ñµÇ½
                     if(sHeader==null)
                            return null;
                     if(!DataProvider.GetInstance.CheckLogin(sHeader.Username,sHeader.Password))
                            return null;
                     //È¡µÃ¸üеÄxmlÄ£°åÄÚÈÝ
                     XmlDocument doc = new XmlDocument();
                     doc.Load(Server.MapPath("update.xml"));c                     XmlElement root = doc.DocumentElement;
                     //¿´¿´Óм¸¸öÎļþÐèÒª¸üÐÂ
                     XmlNode updateNode = root.SelectSingleNode("filelist");
                     string path = updateNode.Attributes["sourcepath"].Value;
                     int count = int.Parse(updateNode.Attributes["count"].Value);
                     //½«xmlÖеÄvalueÓÃʵ¼ÊÄÚÈÝÌæ»»
                     for(int i=0;i= updateNode.ChildNodes[i];
                            string fileName = path + itemNode.Attributes["name"].Value;
                            FileStream fs = File.OpenRead(Server.MapPath(fileName));
                            itemNode.Attributes["size"].Value = fs.Length.ToString();
                            BinaryReader br = new BinaryReader(fs);
                            //ÕâÀïÊÇÎļþµÄʵ¼ÊÄÚÈÝ£¬Ê¹ÓÃÁËBase64String±àÂë
                            itemNode.SelectSingleNode("value").InnerText = Convert.ToBase64String(br.ReadBytes((int)fs.Length),0,(int)fs.Length);
                            br.Close();
                            fs.Close();
                     }
                     return doc;
              }

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