自定义事件的实例
从网上找了一个比较容易理解的自定义事件实例,记录再次方便学习。原文地址:http://www.easck.com/kaifa/cjc/46234.html
发布事件的类TestEventSource:
复制代码using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace EventDemo
{
/// <summary>
/// 发布事件的类
/// </summary>
public class TestEventSource
{
//定义事件参数类
public class TestEventArgs : EventArgs
{
public readonly char KeyToRaiseEvent;
public TestEventArgs(char keyToRaiseEvent)
{
KeyToRaiseEvent = keyToRaiseEvent;
}
}
//定义delegate
public delegate void TestEventHandler(object sender, TestEventArgs e);
//用event 关键字声明事件对象
public event TestEventHandler TestEvent;
//事件触发方法
protected virtual void OnTestEvent(TestEventArgs e)
{
if (TestEvent != null)










