UWP 将多个文件从资产复制到指定位置

Question

所以我做到了这一步：

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。

我可以为每个文件编写新的复制/粘贴行，但必须有更简单的方法来将它们放在一起。

谢谢？

Answer 1

我不知道如何一次获取所有文件并复制 他们都在一起。

以下是使用代码实现此目的的一种方法：

首先，您需要获取资产(源(文件夹。

您可以使用以下行执行此操作：

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的文件夹(目标(

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

以下是调整后的代码：

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！这确实帮助很大，但是。

我必须回答我自己的问题，因为我调整了您的调整以准确到达我最初要去的地方。

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(@"AssetsNewFolder1");
foreach (StorageFile assetFile in await assetsFolder.GetFilesAsync())
{
await assetFile.CopyAsync(projectFolder");
}
}

我实际上需要在"资产"文件夹中有一个文件夹(@"AssetsNewFolder1");

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，带有随机名称，例如"1234-456-789">

因此，替换为await assetFile.CopyAsync(projectFolder);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！