c# - C# BackgroundTransferContentPart 放置多个文件

Question

我有一个 BackgroundUploader 实例，我通过 put 方法将一些文件上传到 webdav 服务器。这没有任何问题。现在在 BackgroundUploader 命名空间中，有一个 BackgroundTransferContentPart 方法，用于上传多个文件。我不知道如何以正确的方式进行操作，因为我必须将文件名添加到 URI，以便将文件放在服务器上。在 BackgroundTransferContentPart 上，URI 只指定一次，没有文件名，那么我该如何上传多个文件呢？

编辑：这是我的代码

    private async void UploadAllFiles()
    {
        // URI
        Uri uri = new Uri("https://example.com/upload/");

        // FileOpenPicker
        FileOpenPicker picker = new FileOpenPicker();
        picker.FileTypeFilter.Add("*");
        IReadOnlyList<StorageFile> files = await picker.PickMultipleFilesAsync();

        // Files
        List<BackgroundTransferContentPart> parts = new List<BackgroundTransferContentPart>();
        for (int i = 0; i < files.Count; i++)
        {
            BackgroundTransferContentPart part = new BackgroundTransferContentPart("File" + i, files[i].Name);
            part.SetFile(files[i]);
            parts.Add(part);
        }

        // Credentials
        string userName = "username";
        string passWord = "password";
        var creds = new PasswordCredential("login", userName, passWord);

        // BG-Uploader
        BackgroundUploader uploader = new BackgroundUploader();
        uploader.SetRequestHeader("RequestId", file.DisplayName);
        uploader.Method = "PUT";
        uploader.ServerCredential = creds;

        // Create operation
        UploadOperation upload = await uploader.CreateUploadAsync(uri, parts);

        // Upload
        await upload.StartAsync().AsTask(cts.Token, progressCallback);
    }