Question

I have an enumeration value marked with the following attribute. The second parameter instructs the compiler to error whenever the value is used. I want this behavior for anyone that implements my library, but I need to use this enumeration value within my library. How do I tell the compiler to ignore the Obsolete error for the couple of uses in my library.

public enum Choices {     One,     Two,     [ObsoleteAttribute('don't use me', true)]      Three,     Four } 

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Solution (Thanks everyone)

public class EnumHack {   static EnumHack()   {     // Safety check     if (Choices!= (Choices)Enum.Parse(typeof(Choices), 'Three'))       throw new Exception('Choices.Three != 3; Who changed my Enum!');   }    [Obsolete('Backwards compatible Choices.Three', false)]   public const Choices ChoicesThree = (Choices)3; } 

Answer 1

Private a separate constant somewhere like this:

private const Choices BackwardsCompatibleThree = (Choices) 3; 

Note that anyone else will be able to do the same thing.