GenericMethod.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Theory8;

namespace Theory8_2
{
    class Customer
    {
        public int Id = 5;
    }
    class BaseClass
    {
        public virtual bool DoSomething<T>(T obj)
        {
            Console.WriteLine("base");
            return true;
        }
    }

    class GenericMethod:BaseClass
    {
        public override bool DoSomething(Customer obj)
        {
            Console.WriteLine("child");
            return true;
        }

        static void Main(string[] args)
        {
            Object objCus = new Object();
            BaseClass obj = new GenericMethod();
            obj.DoSomething(objCus);
        }
    }
}