CODEWITHSUNDEEP
windows-phone-8windows-phone-8.1
rndsum
rndsum

Reputation: 81

ApplicationData.Current.LocalFolder.CreateFileAsync throws UnauthorizedAccessException

I am trying to store a file to the app's storage in a Windows Phone 8.1 app, but it always fails with a System.UnauthorizedAccessException.

The exception occurs on the following line (no related code before that):

StorageFile storageFile = await ApplicationData.Current.LocalFolder.CreateFileAsync("test.xml", CreationCollisionOption.ReplaceExisting);

Upvotes: 3

Views: 2287

Answers (1)

rndsum
rndsum

Reputation: 81

Finally found the issue:

I had a call to

Windows.Storage.ApplicationData.Current.LocalFolder.DeleteAsync()

in code that ran once after installing the app. Therefore all writing to this folder failed after that point.

I am not sure why GenerateUniqueName made the UnauthorizedAccessException disappear before, but since I wasn't able to read the file when using GenerateUniqueName I assume that specific code path doesn't ever throw that exception for some reason, maybe because it assumes there can never be an issue when using unique file names.

Upvotes: 4

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