试图在InstalledLocation StorageFolder中尝试CreateFileAsync时，访问被拒绝？

Question

我在InstalledLocation试图CreateFileAsync StorageFolder

StorageFolder storageFolder = Windows.ApplicationModel.Package.Current.InstalledLocation; 
StorageFile file = await storageFolder.CreateFileAsync("fileNmae", Windows.Storage.CreationCollisionOption.ReplaceExisting); 

我也试过

var storageFolder = await StorageFolder.GetFolderFromPathAsync("ms-appx:///"); 

，并获得“值不在预期范围内”

我可以去当访问被拒绝大约和CreateFileAsync在Windows.Storage.ApplicationData.Current.LocalFolder然后CopyAsync到InstalledLocation StorageFolder？

StorageFolder storageFolder = Windows.Storage.ApplicationData.Current.LocalFolder; 
StorageFile file = await storageFolder.CreateFileAsync("fileName", Windows.Storage.CreationCollisionOption.ReplaceExisting); 

StorageFolder installedLocationFolder = Windows.ApplicationModel.Package.Current.InstalledLocation; 
var result = await file.CopyAsync(installedLocationFolder, "fileName", Windows.Storage.NameCollisionOption.ReplaceExisting); 

但CreateFileAsync在InstalledLocation StorageFolder给出拒绝访问？ 是因为安全原因还是我在这里编码有问题？

Answer 1

该应用的安装目录是一个只读位置。另外，不建议您将数据文件写入安装位置。如果你需要存储的数据，这是只对应用程序的使用，你应该使用

StorageFolder localFolder = ApplicationData.Current.LocalFolder; 

或

Windows.Storage.StorageFolder temporaryFolder = ApplicationData.Current.TemporaryFolder; 

根据数据的生命周期。