1 namespace Microshaoft 2 { 3     using System; 4     using System.Linq; 5     using System.Drawing; 6     using System.Collections.Generic; 7     using System.Windows.Forms; 8     public class Form1 : Form 9     {10         static void Main()11         {12             Application.Run(new Form1());13         }14         //private List
     
      
       > _actions = null;15         //private List
       
         _eventHandlers = null;16         private Button button1;17         public Form1()18         {19             button1 = new Button();20             button1.Text = "button1";21             Controls.Add(button1);22             23             var actions = new List
        
         
          >();24             //_actions = actions;25             var eventHandlers = new List
          
           ();26 //_eventHandlers = eventHandlers;27 //int i = 1;28 EventHandler eh;29 eh = new EventHandler30 (31 (x, y) =>32 {33 MessageBox.Show("Lambda1");34 DisposeHandlersAllProcesses(eventHandlers);35 }36 );37 eventHandlers.Add(eh);38 eventHandlers.Add(eh);39 //_actions.Add(eh);40 //_actions.Add(eh);41 eventHandlers42 //_actions43 .ForEach44 (45 (x) =>46 {47 button1.Click += eh;48 button1.Click +=49 (50 (xx, yy) =>51 {52 MessageBox.Show("Lambda2");53 DisposeHandlersAllProcesses(eventHandlers);54 }55 );56 }57 );58 button1.Click -= eh;59 eh = null;60 DisposeHandlersAllProcesses(eventHandlers);61 //(EventHandler) _action;62 //new EventHandler63 }64 //private void DisposeHandlersAllProcesses(List
           
             handlers)65 private void DisposeHandlersAllProcesses(List
            
              handlers)66 {67 handlers68 //_actions69 .ForEach70 (71 (x) =>72 {73 var invocations = x.GetInvocationList();74 Array.ForEach75 (76 invocations77 , (xx) =>78 {79 x -= (EventHandler)xx;80 Console.WriteLine("{0}:{1}", x, xx);81 }82 );83 x = null;84 }85 );86 }87 }88 }