C#_ Delegates and Events

Commissioned:

Pass the method as a parameter

public delegate void AddDelegate (string name);

public class ad{

AddDelegate is an example of a delegate, passing the method as a parameter, logically separating, decoupling

public static void Addhander (String name,adddelegate adddelegate) {

AddDelegate (name);//Call this method

}

}

public static void Add (string name) {CW (name);}

Call:

AddDelegate add = new AddDelegate (ad.add);//Instantiation of Delegates

Ad.addhander ("ABC", add);//The delegate is passed in as a parameter

　　　　

Event:

public delegate void Catdelegate ();//define a delegate

Declaring a cat
public class cat{

Public Event catdelegate Cathander ;//Declaring an event

public void Miaocat () {
Cathander.invoke ();//Execute Event
}

}

Definition: A delegate is a type, and an event is an instance of a delegate;

Call: Cat Cat =new Cat ();

cat.cathander+=run;//Register Action Run () method

cat.cathander+=miao;//Register Action Miao () method
Cat. Miaocat ();//Execute Call event method, the procedure executes run, Miao these two methods

C#_ Delegates and Events