在UWP的LocalFolder中创建一个文件夹并将文件复制到该文件夹

1 回答

• 0

  这是你能做的 . 我在记事本中写了这个，没有机会测试这个 .

  FileOpenPicker openPicker = new FileOpenPicker();
  openPicker.ViewMode = PickerViewMode.Thumbnail;
  openPicker.SuggestedStartLocation = PickerLocationId.Desktop;
  
  foreach (string extension in FileExtensions.Video)
  {
      openPicker.FileTypeFilter.Add(extension);
  }
  
  file = await openPicker.PickSingleFileAsync();
  if (file != null)
  {
      StorageFolder localFolder = Windows.Storage.ApplicationData.Current.LocalFolder;
  
      string folderName = System.IO.Path.GetFileNameWithoutExtension(file.Name);  //folder name with filename
  
      ////await ApplicationData.Current.LocalFolder.CreateFolderAsync("Data");//need to change the folder name with filename
  
      StorageFolder testFolder = await Windows.Storage.ApplicationData.Current.LocalFolder.CreateFolderAsync("test", CreationCollisionOption.OpenIfExists);
  
      ////StorageFolder newFolder = await Windows.Storage.ApplicationData.Current.LocalFolder.CreateFolderAsync(folderName, CreationCollisionOption.OpenIfExists);
  
      StorageFolder newFolder = await testFolder.CreateFolderAsync(folderName, CreationCollisionOption.OpenIfExists);
  
      string desiredName = file.Name;
      //should copy it to subfolder and raise alert if already exist
  
      ////StorageFile newFile = await localFolder.CreateFileAsync(desiredName, CreationCollisionOption.FailIfExists);
  
      try
      {
          await file.CopyAsync(newFolder, desiredName, NameCollisionOption.FailIfExists);
      }
      catch(Exception exp)
      {
          //show here messagebox that is exists
          Windows.UI.Xaml.Controls.ContentDialog replacePromptDialog = new Windows.UI.Xaml.Controls.ContentDialog()
          {
              Title = "File exists in the new location",
              Content = "Do you want to replace the old file with the new file?",
              CloseButtonText = "Keep the old one",
              PrimaryButtonText = "Replace with new one"
          };
          Windows.UI.Xaml.Controls.ContentDialogResult result = await replacePromptDialog.ShowAsync();
          if (result == Windows.UI.Xaml.Controls.ContentDialogResult.Primary)
          {
              await file.CopyAsync(newFolder, desiredName, NameCollisionOption.ReplaceExisting);
          }
      }
  
  }
  

  回复于 2024-05-01T16:10:09+08:00