Events : Event : GUI Windows Forms C# Examples

Events

    
using  System;

public  class  Button
{
        public  delegate  void  ClickHandler(object  sender,  EventArgs  e);
        
        public  event  ClickHandler  Click;
        
        protected  void  OnClick()
        {
                if  (Click  !=  null)
                Click(this,  null);
        }
        
        public  void  DoClick()
        {
                OnClick();
        }
}

class  MainClass
{
        static  public  void  ButtonHandler(object  sender,  EventArgs  e)
        {
                Console.WriteLine("Button  clicked");
        }
        
        public  static  void  Main()
        {
                Button  button  =  new  Button();
                
                button.Click  +=  new  Button.ClickHandler(ButtonHandler);
                
                button.DoClick();
                
                button.Click  -=  new  Button.ClickHandler(ButtonHandler);
                
                button.DoClick();
        }
}
    
   
  
   

Button clicked

Related in same category :
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• Event and event handler
• Use delegate to handle events
• Fire event in property setter
• Events
• Events add and remove with synchronized block
• Events
• A .NET-compatible event
• Use the built-in EventHandler delegate
• Use an anonymous method as an event handler