LINQ Custom Sort

Question

I want an alphabetic sort with one exception.
There is a Group with a Name = \"Public\" and an ID = \"0\" that I want first.
(would rather use ID = 0)
After that

Answer 1

    public IEnumerable GroupAuthoritysSorted 
    { 
        get 
        { 
            return GroupAuthoritys.OrderBy(x => x.Group.ID == 0)
                                  .ThenBy(x => x.Group.Name); 
        } 
    }