What exception type to use when a property cannot be null?

Question

In my application I need to throw an exception if a property of a specific class is null or empty (in case it\'s a string). I\'m not sure what is the best exception to use

Answer 1

If the problem is that a member of an argument, and not the argument itself, is null then I think the best choice is the more generic ArgumentException. ArgumentNullException does not work here because the argument is in fact not null. Instead you need the more generic "something is wrong with your argument" exception type.

A detailed message for the constructor would be very appropriate here