FileWriter.cs

using System;

namespace Theory10
{
    public class FileWriter
    {
        string fn = null;
        public static void Main()
        {
            FileWriter fw = new FileWriter();
            Func<int, bool> methodCall = fw.CheckSomething;

            methodCall(1);
        }
        public bool CheckSomething(int i)
        {
            Console.WriteLine(i);
            Console.WriteLine("Check Something");
            return true;
        }
    }
}