Tonight I decided to take a quick look at delegates in C#. I've been using them for quite some time but I've never really done a lot with them and although I understand how to use them, I haven't really understood what they were doing so I figured I'd do some testing with a small console application. Here is what I wrote.

using System;
using System.Collections.Generic;
using System.Text;
namespace DelegateTesting
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("Pauls Delegate tester:");
            //GetFunction myNewFunction = new GetFunction(WriteMe);
            MyProgram program = new MyProgram();
            
        }
         
    }
    public class MyProgram
    {
       public MyProgram()
       {
           Console.WriteLine("Got to here...");
           GetFunction myNewFunction = new GetFunction(WriteMe);
           myNewFunction();
           myNewFunction = new GetFunction(ShitIBroke);
           myNewFunction();
           SecondSameDelegate secondDel = new SecondSameDelegate(myNewFunction);
           secondDel();
           Console.WriteLine("Now we reassign myNewFunction.");
           myNewFunction = new GetFunction(WriteMe);
           myNewFunction();
           secondDel();           
       }
 
         public void WriteMe()
        {
            Console.WriteLine("WriteMe function called!!");
        }
        public void ShitIBroke()
        {
            Console.WriteLine("ShitIBroke function called!");
        }
        public delegate void GetFunction();
        public delegate void SecondSameDelegate();
    }
}

The part that I thought was interesting was that the assignment of one delegate to another delegate would result in the reference function being assigned instead of the delegate itself.

Technorati Tags: .NET, C#, code, delegates, DOS, programming, Visual Studio, VS2005

¶ 8:13 PM