Gen inheritance test, C#

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//Title of this code
//Rextester.Program.Main is the entry point for your code. Don't change it.
//Compiler version 4.0.30319.17929 for Microsoft (R) .NET Framework 4.5

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text.RegularExpressions;

namespace Rextester
{

class NonGen
	{

public int num;
        public string s;
        
        
        public NonGen() 
		{
          //NonGen ng=new NonGen();

}

public NonGen(int i) 
		{

num = i;

}
        public NonGen(int i,string st) 
		{

num = i;s=st;

}

public int GetNum() 
		{

return num;

}

// A generic derived class.

class Gen<T> : NonGen
	{

public T ob;
        public int j;
         public Gen<object> ng;
      
        public Gen() {   ng=new Gen<object>(); }
        public Gen(T o) 
		{
           
        }

public Gen(T o, int i) : base (i) 
		{

ob = o;j=i;

}

// Return ob.

public T GetOb2() 
		{  
            
            ng.ob=ob;ng.j=j;
			return (Gen<object>)ng;

}
        public T GetOb() 
		{
 
			return ob;

}

}
	public class Program
	{
		public static void Main(string[] args)
		{
			// Create a Gen object for string.

Gen<string> w = new Gen<string>("Hello", 47);
            Gen<string> w2 = new Gen<string>();
            w2=w.GetOb2();
            NonGen n=new NonGen(12,"Oye");
            
			/*Console.Write(w.GetOb() + "_ ");

Console.WriteLine(w.GetNum());*/Console.WriteLine();
            
            
			Console.Write(n.num+" "+n.s+" "+w.j);
            
           
			
		}
	}
}

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Compilation time: 0.08 s