Microsoft Day Presentation.

I prepare This presentation for new products of Microsoft. in fact it's a fast show, but it's important to know that is new about new products, and that is new trend of Microsoft in the near future about describing life !

i will let you now with Microsoft, Microsoft can show and describe it self  :)

delegate in C#

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:
            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");
        }
    }