We can't use this in static method because keyword 'this' returns a reference to the current instance of the class containing it. Static methods (or any static member) do not belong to a particular instance.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace this_example
{
    class Program
    {
        public class Demo
        {
            int age;
            string name;
 
            public Demo(int age, string name)
            {
                age = age;
                name = name; 
            }
 
            public void Show()
            {
                Console.WriteLine("Your age is :" + age.ToString());
                Console.WriteLine("Your name is : " + name);
            }
        }
 
        static void Main(string[] args)
        {
            int _age;
            string _name;
 
            Console.WriteLine("Enter your age : " );
            _age=Int32.Parse(Console.ReadLine());
 
            Console.WriteLine("Enter your name : ");
            _name=Console.ReadLine();
 
            Demo obj = new Demo(_age, _name);
 
            obj.Show();
            Console.ReadLine();
         }
    }
}

 

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