c#的事件實現的原理

阿新 • • 發佈：2019-01-19

using System;
namespace Events
{
        delegatevoid SomeDelegate(string sender);
        interface ISomeInterface
        {
                event SomeDelegate SomeEvent;
                void PerformSomeEvent();
                void SomeEventHandler(string sender);
        }
        abstractclass AbstractClass:ISomeInterface
        {

publicvirtualevent SomeDelegate SomeEvent;
                publicabstractvoid SomeEventHandler(string sender);
                publicabstractvoid  PerformSomeEvent();
                protectedvoid PerformSomeEventInternal(string sender)
                {
                        if(null!=SomeEvent)
                        {
                                SomeEvent(sender);
                         }
                 }

protectedvoid SomeEventHandlerInternal(string sender,string receiver)
                {
                        Console.WriteLine("some event has been handler");
                        Console.WriteLine(" Sender is ["+ sender+"]");
                        Console.WriteLine("Receiver is ["+receiver+"]");
                        Console.WriteLine(

"------------------------------------");
                 }
         }
        class SomeClass:AbstractClass,ISomeInterface
        {
                publicoverridevoid PerformSomeEvent()
                {
                        PerformSomeEventInternal("Some Class");
                }
                publicoverridevoid SomeEventHandler(string sender)
                {
                        SomeEventHandlerInternal(sender,"Some Class");
                 }
        }
        class AnotherClass:AbstractClass,ISomeInterface
        {
                publicoverridevoid PerformSomeEvent()
                {
                        PerformSomeEventInternal("Another Class");
                }
                publicoverridevoid SomeEventHandler(string sender)
                {
                        SomeEventHandlerInternal(sender,"Another Class");
                 }
        }
        class SomeApplication
        {
                publicstaticvoid SomeEventStaticHander(string sender)
                {
                        Console.WriteLine("some event has been handler.");
                        Console.WriteLine(" Sender is ["+ sender+"]");
                        Console.WriteLine("Receiver is [some application]");
                        Console.WriteLine("-------------------------------------");
                 }
                staticvoid Main(string [] args)
                {
                        SomeClass someclass=new SomeClass();
                        AnotherClass anotherclass=new AnotherClass();
                        someclass.SomeEvent+=new SomeDelegate(someclass.SomeEventHandler);
                        someclass.SomeEvent+=new SomeDelegate(anotherclass.SomeEventHandler);
                        someclass.SomeEvent+=new SomeDelegate(SomeApplication.SomeEventStaticHander);
                        someclass.PerformSomeEvent();
                        Console.ReadLine();
                 }
         }
}

c#的事件實現的原理

uiscrollview的touch事件以及上面子檢視touch事件實現原理

淺析C# Dictionary實現原理

C++ string實現原理

C# 事件訂閱、退訂簡單實現原理

c#的事件實現的原理

C#中foreach實現原理

C++多態的實現原理

C++ 多態的實現原理

C# Winform實現捕獲窗體最小化、最大化、關閉按鈕事件的方法

實現求解線性方程（矩陣、高斯消去法）------c++程序設計原理與實踐（進階篇）

C# Winform 用paint事件實現漸變色

Objective-C Associated Objects 的實現原理

c++多態實現原理

C# ConcurrentBag的實現原理

漫談 C++ 的內存堆實現原理

C++函式模板及實現原理

C#使用委託和事件實現釋出訂閱者模式

C++多型呼叫實現原理（虛擬函式表詳解)

推箱子游戲C++實現原理

Objective-C runtime機制(6)——weak引用的底層實現原理

c#的事件實現的原理

相關推薦