ExternalStorageFile.DateModified Property
[ This article is for Windows Phone 8 developers. If you’re developing for Windows 10, see the latest documentation. ]
Gets the date and time when the current file was last modified.
Assembly: Microsoft.Phone (in Microsoft.Phone.dll)
Your app must register for a file association in the app manifest file to declare what file types (extensions) can be read from the SD card. For more info, see Auto-launching apps using file and URI associations for Windows Phone 8.
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