How to prevent duplicate values in enum?

Question

I wonder is there a way to prevent an enum with duplicate keys to compile?

For instance this enum below will compile

public         


        

Answer 1

public bool ValidateAllDistinct(Type enumType)
{
    return !Enum.GetNames(enumType).All(outerName
        => Enum.GetNames(enumType).Any(innerName
            => innerName == outerName 
                ? true 
                : Enum.Parse(enumType, innerName) != Enum.Parse(enumType, outerName)));
}

I simple test method for your unittest.