InitializeComponent();            List<WswModel> ListModel = new List<WswModel>();            string FilePath = @"../../XML/UserAddDelectUpdate.xml";            string FilePathBin = @"wsw.wsw";            XmlDocument XmlDoc = new XmlDocument();            BinaryFormatter binaryFromatter = new BinaryFormatter();            XmlDoc.Load(FilePath);            XmlNode XNode = XmlDoc.SelectSingleNode("UserTableXml");            XmlNodeList XNodeList = XNode.ChildNodes;            foreach (XmlNode Xnode in XNodeList)            {                WswModel UserTabel = new WswModel();                UserTabel.UserId = int.Parse(Xnode["UserId"].InnerText);                UserTabel.UserName = Xnode["UserName"].InnerText;                UserTabel.UserAge = int.Parse(Xnode["UserAge"].InnerText);                ListModel.Add(UserTabel);            }            if (File.Exists(FilePathBin).Equals(false))            {                FileStream fs = new FileStream(FilePathBin, FileMode.CreateNew);                binaryFromatter.Serialize(fs, ListModel);                fs.Close();            }            FileStream fileStream = File.Open(FilePathBin, FileMode.Open);            List<WswModel> listModel = (List<WswModel>)binaryFromatter.Deserialize(fileStream);            Wsw.DataContext = listModel;