How do I obtain the fully qualified path of an isolated storage file for a WPF application?
You can use reflection to do so, as shown in the linked forum post:
IsolatedStorageFileStream oStream =
new IsolatedStorageFileStream(ISOLATED_FILE_NAME, FileMode.Create, isoStore);
// Get the physical path using reflection
String filePath = oStream.GetType().GetField("m_FullPath",
BindingFlags.Instance | BindingFlags.NonPublic).GetValue(oStream).ToString();
Console.WriteLine(filePath);