Experience Summary 37--c# Event 2

Abbreviated form of some events.

1. You do not need to create a delegate.

Public event Eventhandler<checkeventargs > Playing;

public void Test () {

Checkeventargs args=new Checkeventargs ();

if (playing!=null)

Playing (This,args);

}

2. Custom parameters are not required.

public delegate void Userhandler (object sender, int count);
public event Userhandler Handler;

3, the importance of virtual methods.

public virtual void Onplaying (object sender, Checkeventargs args)
{
if (Playing! = null)
{
Playing (this, args);
}
}

Specifically write an on event handler so that other inheritance can override the method, providing such an interface.

Experience Summary 37--c# Event 2