Question

I heard that nesting of enum is not possible in C#. Then how can convert the following structure to a class hierarchy or something else. So I want the class to act as an enum

Answer 1

nested classes and const fields

class Cat1
{
    public const int Public = 1;
    public class Private
    {
        public const int Abc = 2;
        public const int Mno = 3;
        public const int Pqr = 4;
    }
}