'Can I use system.io in uwp for external folders when I get access by picker?

I want to use DirectoryInfo and Fileinfo in uwp for external folders on windows 10. First, I select folder by picker and get access for StorageFolder. Next I try to set, for example, LastWriteTime:

DirectoryInfo directoryInfo = new DirectoryInfo(storageFolder.Path); 
directoryInfo.LastWriteTime = DateTime.Now;

It works for local app folders, but for external folders I recieve error "Access to the path -||- is denied". Is it generally possible what I want? Are there any workarounds?



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