Force the usage of an attribute on properties, if they already have another attribute

Question

I want to force the usage of an attribute, if another attribute is used. If a special 3rd party attribute is attached to a property, this attribute also needs to be given to a property. Is there any possibility of doing this?

For example:

[Some3rdPartyAttribute("...")]
[RequiredAttribute("...)]
public bool Example{get; set;}

should bring no compile error,

[Some3rdPartyAttribute("...")]
public bool Example{get; set;}

should bring a compile error or warning.

The attribute itself is definded like the example from http://msdn.microsoft.com/en-US/library/z919e8tw(v=vs.80).aspx itself . But how to force the usage of the attribute if another attribute is used?

Answer 1

You can make a console app, that will iterate trough all types in your assembly trough reflection, check if the rule is satisfied and return 0 if it is, and some other error code and output error if the rule is broken.

Then make this console app run as post-build task.