C # Delegate delegate example event-driven
Using system;
Using system. Collections. Generic;
Using system. text;
Using system. Threading;
Using system. runtime. remoting. messaging;
Using system. IO;
Using system. net; Namespace consoleapplication2
{
/// <Summary>
///************************************* ************************************
/// Program Author: Li weitao
/// QQ: 12666954
/// Send messages and drive events
///************************************* ************************************
/// </Summary>
Public struct quitperson // defines the information of the class member
{
Public string name;
Public string class;
}
Class Client
{
Public class cquithireeventargs: eventargs
{
Public readonly quitperson;
Public cquithireeventargs (quitperson) // encapsulate event information
{
This. quitperson = quitperson;
}
}
Public Delegate void quithireeventhandler (Object sender, cquithireeventargs E); // defines the delegate
Public event quithireeventhandler onquithire; // event
Protected virtual void quithire (cquithireeventargs e) // event notifier
{
If (onquithire! = NULL)
Onquithire (this, e );
}
Public void setquitperson (quitperson)
{
Cquithireeventargs E = new cquithireeventargs (quitperson );
Quithire (E); // call the notifier to notify the subscribe of all registration events
}
}
Class teacher
{
Public void report (Object sender, client. cquithireeventargs E)
{
Console. writeline ("{0}'s {1} class skipped! ", E. quitperson. Class, E. quitperson. Name );
}
Public Teacher (client CLT)
{
CLT. onquithire + = new client. quithireeventhandler (report );
}
}
Class schoolposident
{
Public void sreport (Object sender, client. cquithireeventargs E)
{
Console. writeline ("{0 }:{ 1} class {2} skipped! ", Datetime. Now. tow.datestring (), E. quitperson. Class, E. quitperson. Name ); }
Public schoolposident (client CLT)
{
CLT. onquithire + = new client. quithireeventhandler (sreport );
}
}
Class Program
{
Static void main (string [] ARGs)
{
Quitperson q = new quitperson (); // initialize the information of the class member.
Q. Class = "software 051 ";
Q. Name = "Li weitao ";
Client CLT = new client ();
// Subscribe to events
Teacher T = new teacher (CLT );
Schoolposident sp = new schoolposident (CLT );
CLT. setquitperson (Q );
Console. Readline (); }
}
} |
