How can I treat MSB3245 (could not resolve reference) warning as an error?

Question

My question is based on another one, but I want to do the opposite: tell msbuild to treat the warning as an error instead of suppressing a specific msbuild warning.

Answer 1

It seems that the message associated with this warning that's not a warning:

If this reference is required by your code, you may get compilation errors

, is not quite correct. If the missing reference is a WPF theme, you'll get a run-time error (System.IO.FileNotFoundException) instead.

As an aside, if you specifically look for MSB3245 you'll get:

CSC : warning CS1691: 'MSB3245' is not a valid warning number