using System;

public class Program

{

    public delegate void Ham(string msg); // declare a delegate

    public static void Main()

    {

        Console.WriteLine("Hello World");

        // set target method

        Ham del = MethodA;

        del("Hello 1");

        Ham del1 = MethodB;

        del1("Hello 2");    

        Ham del2 = (string msg) =>  Console.WriteLine("Ham khong ten:" + msg);

        del2("Hello 3");

        Ham del3 = del1 + del2;

        del3("Ha ha");

        Printer printer = new Printer();

        printer.Print<int>(100);

        printer.Print(200); // type infer from the specified value

        printer.Print<string>("Hello");

        printer.Print("World!"); // type infer from the specified value

        printer.Print1<int>();

    }

    static void MethodA(string message)

    {

        Console.WriteLine("Method A: " + message);

    }

    static void MethodB(string message)

    {

        Console.WriteLine("Method B: " + message);

    }

    class Printer

    {

        public void Print<T>(T data)

        {

            Console.WriteLine(data);

        }

        public void Print1<T>()

        {

            Console.WriteLine("Test");

        }

    }

}

​

​