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by jinushaun 5104 days ago
Even if you stick with C# and XAML and use no new hardware features, WP 8 will produce a different binary than WP 7 simply due to the differences in the .NET frameworks. WP 7 runs Windows CE with .NET Compact Framework. WP 8 runs Windows NT with the full .NET framework. The Compact Framework is a subset of regular .NET, so 8 will be able to load 7 apps, but not the other way around. (Try making a .NET project that shares code between WPF, Silverlight and WP7 and you'll see what I mean)