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Categories / C# Tutorial / Delegate

 

Declare a delegate and assigns a reference to either the WriteLine method or the ShowWindowsMessage method to its delegate instan

using System; using System.Windows.Forms; delegate void DisplayMessage(string message); public class TestCustomDelegate {    public static void Main()    {       DisplayMessage messageTarget;        if (Environment.GetCommandLineArgs().Length > 1)          messageTarget = ShowWindowsMessage;       else          messageTarget = Console.WriteLine;       messageTarget("Hello, World!");       }          private static void ShowWindowsMessage(string message)    {       MessageBox.Show(message);          } }