private void Button_Click(object sender, RoutedEventArgs e)
 {
     System.Windows.Forms.FolderBrowserDialog folderBrowserDlg = new System.Windows.Forms.FolderBrowserDialog();
     folderBrowserDlg.Description         = "选择图片所在的文件夹...";
     folderBrowserDlg.ShowNewFolderButton = true;
     folderBrowserDlg.RootFolder          = Environment.SpecialFolder.MyComputer;
     if (folderBrowserDlg.ShowDialog() == System.Windows.Forms.DialogResult.OK)
     {
         MessageBox.Show("请等待图片上传结束");
         Cursor = Cursors.Wait;
         string folerName            = folderBrowserDlg.SelectedPath;
         var    result               = UploadPic(folerName);
         SmileManagementViewModel vm = DataContext as SmileManagementViewModel;
         vm.AddSmiles(result, BuiltIns.SmileImageType.Id);
         MessageBox.Show("上传结束");
         Cursor = Cursors.Arrow;
     }
 }
 public SmileManagement()
 {
     DataContext = new SmileManagementViewModel();
     InitializeComponent();
 }