The following code is someone else's example. Excerpt. Little rain second school.
When I saw the admission.
If we go out. Which is not required when you use it,
Qinshihuang.eatevent = new EateventHandler (Lishi.arrangeFood);
It is also possible.
// trigger an event
OneArtEvent (e);
This function can also be omitted. Use Eatevent (this, e) directly; this is also omitted
Public Delegate Void EateventHndler (Object Sender, EateventAntargs E);
This definition can also be the case. You can define a parameter directly.
Public Delegate Void EateventHndLer (String E); But when you use the parameters should be good.
Using system;
Namespace NSEventsample
{
///
/// class EateventArgs must inherit the self-class Eventargs to cause incident package data
///
Public Class EateventArgs: Eventargs
{
Public String RestrauntName; // Hotel Name
Public Decimal Moneyout; // Prepare the consumption amount
}
///
/// This delegate uses the method of the method of processing the eating event (mode)
///
Public Delegate Void EateventHndler (Object Sender, EateventAntargs E);
///
/// Turning an Eateevent class master (master), this class must
/// 1. Declare an event called Eatevent: Public Event Eateventhandler Eatevent;
/// 2. Through a method called OneArtEvent, a meal event is triggered, and the data to which the event is handled;
/// 3. Explain that the event is triggered in some case? At hungry. Use method hungrg to simulate.
///
Public Class Master
{
// Declaration event
Public Event Eateventhandler Eatevent;
/ / Method for triggering events
Public Void OneArt (Eateventargs E)
{
IF (Eatevent! = NULL)
{
Eatevent (this, e);
}
}
// When the master is hungry, he will designate the place of eating and consumption.
Public void Hungry (String Restrauntname, Decimal Moneyout)
{
Eateventargs E = New Eateventargs ();
E.RESTRAUNTNAME = RestrauntName;
E.MONEYOUT = Moneyout;
Console.writeline ("The owner said:");
Console.writeline ("I am hungry, I want to go to {0} to eat, consumption {1} yuan", E.Restrauntname, E.Moneyout;
// trigger an event
OneArtEvent (e);
}
}
///
/// Class Servant (servant) has a method arrangefood to deal with the owner's food event
///
Public Class Servant
{
Public void Arrangefood (Object Sender, EateventAndargs E) {
Console.writeLine ();
Console.writeline ("The servant said:");
Console.writeline ("My master, your command is:");
Console.WriteLine ("Eating Location - {0}", E.RESTRAUNTNAME);
Console.WriteLine ("Prepare for Consumption - {0} Yuan", E.MONEYOUT);
Console.writeline ("Ok, arrange it ...");
Console.Writeline ("Master, your food here, please slow");
}
}
///
The servant of Qinshihuang (Qin Shihuang) is Lisi (Li S), and let Li Si's ArrangeFood
/// method to handle Qinshihuang's eating event: qinshihuang.eatevent = new EateventHandler (Lishi.Arrangefood);
///
Public class god
{
Public static void main ()
{
Master qinshihuang = new master ();
Servant Lishi = New Servant ();
Qinshihuang.eatevent = new EateventHandler (Lishi.arrangeFood);
// Qin Shihuang is hungry, I want to go to Hilton Hotel, spending 5,000 yuan
Qinshihuang.hungry ("Hilton Hotel", 5000.0m);
}
}
}
