public SecondPage()
 {
     if (_checkWhetherAgreeProtcol == null)
     {
         _checkWhetherAgreeProtcol = UserDataSave.OpenFile() as UserOptionSave;
         if (File.Exists("UserOptionSave.xml"))
         {
             _checkWhetherAgreeProtcol.CheckBoxIsEnable = false;
         }
     }
     InitializeComponent();
     DataContext = _checkWhetherAgreeProtcol;
 }
 private void button_Click(object sender, RoutedEventArgs e)
 {
     this.IsEnabled = false;
     BeginStoryboard(Resources["SecondAnimation"] as System.Windows.Media.Animation.Storyboard); //播放页面下个页面之前的动画效果
     UserDataSave.CloseFile(_checkWhetherAgreeProtcol);                                          //保存用户选择
 }