//Copyright (C) Microsoft Corporation. All rights reserved.
// compose.cs
using System;delegate void MyDelegate(string s);
class MyClass
{ public static void Hello(string s) { Console.WriteLine(" Hello, {0}!", s); }public static void Goodbye(string s)
{ Console.WriteLine(" Goodbye, {0}!", s); }public static void Main()
{ MyDelegate a, b, c, d;// Create the delegate object a that references
// the method Hello: a = new MyDelegate(Hello); // Create the delegate object b that references // the method Goodbye: b = new MyDelegate(Goodbye); // The two delegates, a and b, are composed to form c, // which calls both methods in order: c = a + b; // Remove a from the composed delegate, leaving d, // which calls only the method Goodbye: d = c - a;Console.WriteLine("Invoking delegate a:");
a("A"); Console.WriteLine("Invoking delegate b:"); b("B"); Console.WriteLine("Invoking delegate c:"); c("C"); Console.WriteLine("Invoking delegate d:"); d("D"); }}
csc compose.cscompose