I\'m using a custom attribute inherited from an attribute class. I\'m using it like this:
[MyCustomAttribute(\"CONTROL\")]
[MyCustomAttribute(\"ALT\")]
[MyCustom
As an alternative, think about redesigning your attribute to allow for a sequence.
[MyCustomAttribute(Sequence="CONTROL,ALT,SHIFT,D")]
or
[MyCustomAttribute("CONTROL-ALT-SHIFT-D")]
then parse the values to configure your attribute.
For an example of this check out the AuthorizeAttribute in ASP.NET MVC source code at www.codeplex.com/aspnet.