Are Windows Phone 8.0 DLLs compatible with Windows Phone 8.1 apps?

0
votes

I have a Windows Phone 8.1 project, and a Windows Phone 8.0 library. I need to add it into my Windows Phone 8.1 project; but at runtime, I have the following error:

FileNotFoundException: could not load or assembly Microsoft.Phone, Version=8.0.0.0. The system cannot find the file specified.

So my question is simple: are 8.0 libs compatible with Windows Phone 8.1 app ? If not, what should I do ? Migrate them ?

1
c#windowssilverlightwindows-phone-8dll
Is it 8.1 silverlight or winrt? – Tomasz Pikć

1 Answers

0
votes

If your project is Windows Phone 8.1 Silverlight, that it should work fine. If your project is Windows Phone 8.1 XAML (which seems more probable according to the error message) , then no, no way to use it without rewriting.