System.Enum.Equals C# (CSharp) Method

        public extern override bool Equals(Object obj);

 public void selectService(Enum id)
 {
     if (id.Equals(SocialServices.FACEBOOK))
     {
         selectedService = facebook;
     }
     else if (id.Equals(SocialServices.GOOGLE_PLUS))
     {
         selectedService = googlePlus;
     }
     else
     {
         throw new Exception ("MultiSocialService received unrecognized service id.");
     }
 }