UWP 将资产中的多个文件复制到指定位置

Question

所以我已经做到了：

private async void DownloadButton_Click(object sender, RoutedEventArgs e)
   {
    // Pick a location to create new folder in.

    FolderPicker picker = new FolderPicker { SuggestedStartLocation = PickerLocationId.Downloads };
    picker.FileTypeFilter.Add("*");
    StorageFolder folder = await picker.PickSingleFolderAsync();

    // Create new folder with "custom name" + replaces existing.

    var projectFolderName = "New Folder 2";
    StorageFolder projectFolder = await folder.CreateFolderAsync(projectFolderName, CreationCollisionOption.ReplaceExisting);

    //Pick a file to be copied

    StorageFile file = await StorageFile.GetFileFromApplicationUriAsync(new Uri("ms-appx:///Assets/NewFolder1/File1.png"));
    StorageFile file2 = await StorageFile.GetFileFromApplicationUriAsync(new Uri("ms-appx:///Assets/File2.png"));

    //Paste copied file in custom folder.

    await file.CopyAsync(projectFolder, "File1.png");
    await file2.CopyAsync(projectFolder, "File2.png");
    }
  }
}

我不知道如何一次获取所有文件并将它们一起复制。

我可以为每个文件写新的一行 copy/paste，但必须有更简单的方法将它们放在一起。

谢谢？

Answer 1

What I can't figure out if how to get all the files at once and copy them all together.

这是使用您的代码实现此目的的一种方法：

首先，您需要获取 Assets (Source) 文件夹。

您可以使用此行来完成此操作：

StorageFolder assetsFolder = await Windows.ApplicationModel.Package.Current.InstalledLocation.GetFolderAsync(@"Assets");

然后枚举源中的文件并复制到指定文件夹（目标）

 foreach (StorageFile assetFile in await assetsFolder.GetFilesAsync())
 {
     await assetFile.CopyAsync(projectFolder, $"{Guid.NewGuid().ToString()}.png");
 }

这是调整后的代码：

private async void DownloadButton_Click(object sender, RoutedEventArgs e)
        {
            // Pick a location to create new folder in.
            FolderPicker picker = new FolderPicker { SuggestedStartLocation = PickerLocationId.Downloads };
            picker.FileTypeFilter.Add("*");
            StorageFolder folder = await picker.PickSingleFolderAsync();

            // Create new folder with "custom name" + replaces existing.

            var projectFolderName = "New Folder 2";
            StorageFolder projectFolder = await folder.CreateFolderAsync(projectFolderName, CreationCollisionOption.ReplaceExisting);

            // Copy all files from assets folder and paste to destination.
            StorageFolder assetsFolder = await Windows.ApplicationModel.Package.Current.InstalledLocation.GetFolderAsync(@"Assets");

            foreach (StorageFile assetFile in await assetsFolder.GetFilesAsync())
            {
                await assetFile.CopyAsync(projectFolder, $"{Guid.NewGuid().ToString()}.png");
            }
        }

Answer 2

非常感谢！这真的很有帮助，但是。

我必须回答我自己的问题，因为我调整了你的调整以准确到达我最初前往的地方。

private async void DownloadButton_Click(object sender, RoutedEventArgs e)
        {
            // Pick a location to create new folder in.
            FolderPicker picker = new FolderPicker { SuggestedStartLocation = PickerLocationId.Downloads };
            picker.FileTypeFilter.Add("*");
            StorageFolder folder = await picker.PickSingleFolderAsync();

            // Create new folder with "custom name" + replaces existing.

            var projectFolderName = "New Folder 2";
            StorageFolder projectFolder = await folder.CreateFolderAsync(projectFolderName, CreationCollisionOption.ReplaceExisting);

            // Copy all files from assets folder and paste to destination.
            StorageFolder assetsFolder = await Windows.ApplicationModel.Package.Current.InstalledLocation.GetFolderAsync(@"Assets\NewFolder1");

            foreach (StorageFile assetFile in await assetsFolder.GetFilesAsync())
            {
                await assetFile.CopyAsync(projectFolder");
            }
        }

我实际上需要 "Assets" 文件夹中的一个文件夹 (@"Assets\NewFolder1");

和await assetFile.CopyAsync(projectFolder, $"{Guid.NewGuid().ToString()}.png");

实际上将该文件夹中的所有内容都保存为“.png”文件，随机命名为“1234-456-789”

因此，被替换为 await assetFile.CopyAsync(projectFolder); 以保存具有原始扩展名和名称的所有内容。

就是这样！

再次感谢！ x]

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