private async void StartNetwork(APIlsFileInfo info = null)
 {
     var client = new PutHttpClient();
     if (info == null || info.ext.Equals("folder"))
     {
         var targetDir = info != null ? info.path : "";
         // LANの場合はマニフェストのプライベートネットワークが必要
         var param = new Dictionary<string, string> { { "target_dir", targetDir } };
         _ViewModel.APIlsResponse = await client.Execute<APIls>(_ViewModel.Url + "/APIls.php", _ViewModel.UserName, _ViewModel.Password, param);
     } else
     {
         var param = new Dictionary<string, string> { { "target_file", info.path } };
         _ViewModel.APIviewResponce = await client.Execute<APIview>(_ViewModel.Url + "/APIview.php", _ViewModel.UserName, _ViewModel.Password, param);
     }
     if (client.IsError)
     {
         dialog.Title = "エラー発生";
         listViewMesasge.ItemsSource = client.ErrorMessages;
         await dialog.ShowAsync();
         return;
     }
     textBox.Text = client.Json;
 }
 private async void listVireFile_SelectionChanged(object sender, SelectionChangedEventArgs e)
 {
     if (e.AddedItems.Count < 1)
     {
         return;
     }
     var listView = sender as ListView;
     var fileName = listView.SelectedItem as string;
     var str = _ViewModel.Url + "/" + _ViewModel.APIviewResponce.extract_dir + "/" + fileName;
     var client = new PutHttpClient();
     var ba = await client.ExecuteBinary(str, _ViewModel.UserName, _ViewModel.Password);
     var bitmap = new BitmapImage();
     using(var ms = new MemoryStream(ba))
     {
         await bitmap.SetSourceAsync(ms.AsRandomAccessStream());
         image.Source = bitmap;
     }
 }