delegate, lamdas and events

a delegate is a function pointer
when we work with events we use a delegate which inherie from multicast deletegate

a delegate is the pipeline between the event and the event handler

button.Click += EventHandler(btnHit_Click) // here when the click event is raised the eventhandler delegate will call the btnHit_CLick method

public delegate void WorkHandler(string job, int time) // this delegate can be used as the pipeline for methods that take these two args

 public void work(string job, int time)
 {
    console.write("called")
 }
 
  public void work2(string job, int time)
 {
    console.write("called2")
 }
 
 var del = new WorkHandler(work);
  
 del("sf",3) // this will force the pipeline to call the work method
 
   var del2 = new WorkHandler(work2); 
  
  del += del2;
   del("sf",3) // this will force the pipeline to call the work and work2 method
   
   when the delete has a return type it will expect methods with return types 
   in a multicast scenerio where the delete is assigned to a variable the last return type will be place in that var
   
   behind the scenes the delagate will be compiled into a class
   
   
   events
   
   public event WorkHandler WorkCompleted; //define an event
   
   public void OnWork(){
   if(WorkCompleted != null) // this will make sure it has been attached 
   WorkCompleted("adsdsd", 6) // this will raise the event which will call deletegates and that will then call the work method
   
   
   simple example
   
   https://www.codeproject.com/Articles/11541/The-Simplest-C-Events-Example-Imaginable
   another simple sample
   https://msdn.microsoft.com/en-us/library/aa645739(v=vs.71).aspx
   }