开发者社区

文档建议反馈控制台

最新优惠活动

文章/答案/技术大牛

发布

Passing multiple methods (delegate?)

在这个问答内容中，我们讨论了如何将多个方法传递给一个委托。委托是一种类型安全的、可以在运行时分配的函数指针。在C#中，可以使用委托将多个方法绑定到一个事件处理程序，从而实现多个方法的调用。

以下是一个简单的示例，说明如何将多个方法传递给一个委托：

using System;

namespace MultipleMethodsDelegate
{
    class Program
    {
        static void Main(string[] args)
        {
            MyClass obj = new MyClass();
            obj.MyEvent += new MyDelegate(Method1);
            obj.MyEvent += new MyDelegate(Method2);
            obj.RaiseEvent();
        }

        static void Method1()
        {
            Console.WriteLine("Method 1 is called");
        }

        static void Method2()
        {
            Console.WriteLine("Method 2 is called");
        }
    }

    public delegate void MyDelegate();

    public class MyClass
    {
        public event MyDelegate MyEvent;

        public void RaiseEvent()
        {
            if (MyEvent != null)
            {
                MyEvent();
            }
        }
    }
}

在这个示例中，我们定义了一个名为MyClass的类，它具有一个名为MyEvent的事件。我们还定义了一个名为MyDelegate的委托，该委托与MyEvent事件关联。

在Main方法中，我们创建了一个MyClass对象，并将两个方法Method1和Method2分别绑定到MyEvent事件处理程序。然后，我们调用RaiseEvent方法，该方法触发MyEvent事件，从而调用Method1和Method2。

输出结果如下：

Method 1 is called
Method 2 is called

这个示例演示了如何将多个方法传递给一个委托，从而实现多个方法的调用。在云计算领域，这种方法可以用于实现事件驱动的编程模型，例如在腾讯云函数计算（SCF）中，可以使用委托将多个函数绑定到一个事件处理程序，从而实现多个函数的调用。

页面内容是否对你有帮助？

有帮助

没帮助

相关·内容

【C#】转一篇MSDN杂志文：ASP.NET Pipeline: Use Threads and Build Asynchronous Handlers in Your Server-Side Web

of concurrency by launching multiple processes and/or spawning multiple threads to service requests and...besides the standard methods of IHttpHandler....new thread to process the request and then immediately return from the BeginProcessRequest method, passing...interface shown earlier, which derives from IHttpHandler for a total of four methods....instead of calling the synchronous ProcessRequest method, it invokes BeginProcessRequest on the handler, passing

6173 1

使用Groovy实现Domain-Specific Languages 二

As such, it is possible to enhance numbers by adding properties or methods to them....methods....code()}the EmailSpec class implements the from, to, … methods....may have methods that take multiple closures:上面的例子，只有一个闭包，但是如果有多个闭包的情况：void fooBarBaz(Closure foo, Closure...closures and multiple arguments, you can use several targets:还有更牛逼了，多个代理变量、多个闭包。

4925 0

Line Counter - Writing a Visual Studio 2005 Add-In

#region Support Structures // Delegate for pluggable line counting methods delegate void CountLines...declaration of delegate void CountLines(LineCountInfo info)....In the Line Counting Methods region of your class, create four private methods: private void CountLinesGeneric...It is now a simple matter of passing in the right key to m_countAlgorithms, and calling the delegate...The main trick of counting multiple different kinds of source files used the generic dictionady and delegate

1.1K8 0

Android--CoordinatorLayout源码分析及NestedScrolling机制

An implementation may choose to use the consumed portion to match or chase scroll * position of multiple...The unconsumed portion may be used to * allow continuous dragging of multiple scrolling or draggable...any View methods to the * NestedScrollingChildHelper methods of the same signature....should invoke * {@link #dispatchNestedScroll(int, int, int, int, int[]) dispatchNestedScroll}, passing...* * This is a delegate method.

7273 0

ICLR2024推荐系统投稿论文一览

How Does Message Passing Improve Collaborative Filtering? 14....A branch of research enhances CF methods with message passing used in graph neural networks, due to its...They assume that message passing helps CF methods in a manner akin to its benefits for graph-based learning...To address this gap, we formally investigate why message passing helps CF from multiple perspectives...The performance of the proposed method is evaluated on multiple public datasets.

9591 1

Weisfeiler-Lehman图同构测试及其他

A duplicate identifier removal stage in which multiple occurrences of the same feature are reduced to...MPNN contains two phases, a message passing phase (namely the propagation step) and a readout phase....The message passing phase runs for T times and is defined by message function Mt and vertex update function...reaction outcomes with weisfeiler-lehman network NeurIPS2017 MPNN Graph neural networks: A review of methods...and applications arXiv 2018 Neural message passing for quantum chemistry arXiv 2017 GIN How powerful

6612 0

【Java】：Apache Commons Digester

You can use multiple slashes to define a hierarchy of any desired depth that will be matched appropriately...Note that wildcard patterns are ignored if an explicit match can be found (and when multiple wildcard...property names that match the attributes specified on this XML element, and then call them individually, passing...It then calls this method, passing the object at the top of the stack as an argument....It then calls this method, passing the next-to-top object on the stack as an argument.

7222 0

SAP 最全的BADI的查找方法总结

new BAdIs, a BAdI object is created via the ABAP statement GET BADIas a handle for the calls of BAdI methods...Passing comparison values for the filter a....the classical BAdIs, the filter values are stored in a structure and passed with the call of the BAdI methods...Calling BAdI methods Passing comparison values for the filter a....With new BAdIs, multiple calls are possible and the call positions are not registered centrally.

6042 0

IOS开发系列——Block专题【整理，部分原创】

b.内存安全(避免delegate弱引⽤用可能带来的野指针问题)。 c.使⽤⽅方便,inline声明。...3.2 与Delegate 比较 1 Prefer to use blocks when object is singleton as you cannot use delegationpattern...For example UIViewContoller Delegate tells viewWillLoad,viewDidLoad,viewWillAppear, viewDidAppear and...pattern if an object has multiple distinct events.For example UITextField have multiple distinct events...methods require number of rows, number ofsections and each cell to be returned from its owner object

2342 0

【Hooks】：Awesome React Hooks

Migrating from lifecycle methods to hooks 3.1. From componentDidMount to useMount 3.2....Duplicated logic between different components and lifecycle methods....You can pass data between multiple Hooks just like you normally do between functions....Migrating from lifecycle methods to hooks 3.1....Moreover, passing an empty array will tell React to call it once and never again.

6941 0

RND 笔记

to meaningful events: losing a life (2,8,10,21), narrowly escaping an enemy (3,5,6,11,12,13,14,15), passing...the smaller spikes correspond to relatively rare events that the agent has nevertheless experienced multiple...Univ. of Edinburgh OpenAI ABSTRACT We introduce an exploration bonus for deep reinforcement learning methods...Comparison of Figures 7 and 9 shows that across multiple games the RNN policy outperforms the CNN more...frequently than the other way around. 4 Other methods of exploration include adversarial self-play (

6673 0

.NET面试基础知识

IComparer Variable declared as const vs. readOnly Default value expressions Passing parameters to methods...> x.Name.CompareTo(y.Name)); personObjList.Sort((x, y) => x.Age.CompareTo(y.Age)); IComparer on multiple...Passing parameters to methods and return value ?...ref uses to pass variable for input and output; It is initialized before passing. in (C# 7.2) uses to...But C# 8(not release yet) supports default implantation of the methods in the interface.Example, ?

8402 0

Shiro 配置

If you have multiple realms, use the 'realms' property instead. --> <property name="sessionMode...-- Post processor that automatically invokes init() and destroy() <em>methods</em> for Spring-configured...getTargetBeanName protected Filter initDelegate(WebApplicationContext wac) throws ServletException { Filter <em>delegate</em>...= wac.getBean(getTargetBeanName(), Filter.class); if (isTargetFilterLifecycle()) { <em>delegate</em>.init...(getFilterConfig()); } return <em>delegate</em>; } 体现在SetFilterBeanName的默认值为filtername /** * Set

6461 0

.NET Core 3.0之深入源码理解Startup的注册及运行

This may be called 3: /// multiple times. 4: /// 5: /// A delegate for configuring the ....services) => configureServices(services)); 15: } 16: 17: /// 18: /// Adds a delegate...">A delegate for configuring the ....> 1) 16: { 17: throw new InvalidOperationException(string.Format("Having multiple

1.1K1 0

axios : Promise based HTTP client for the browser and node.jsaxios

console.log(response); }) .catch(function (error) { console.log(error); }); Performing multiple...function (acct, perms) { // Both requests are now complete })); axios API Requests can be made by passing...The available instance methods are listed below....response.statusText); console.log(response.headers); console.log(response.config); }); When using catch, or passing...is optional) source.cancel('Operation canceled by the user.'); You can also create a cancel token by passing

8662 0

MS 的IOC容器（ObjectBuilder）?

ObjectBuilder Architecture ObjectBuilder uses a pipeline of strategies that allows multiple operations...The ObjectBuilder pipeline is organized into stages, and each stage of the pipeline contains multiple...base class BuilderBase exposes two methods....This allows you to take existing objects and ensure that they are properly prepared for use by passing...Multiple locators can point to the same object instance.

8577 0

Go 并发模式： context.Context 上下文详解

5.仅将Context值用于传输流程和 API 请求范围的数据（request-scoped data），not for passing optional parameters to functions.... 6.相同的 Context 可以传递给在不同的 goroutine 中运行的函数 (Context's methods may be called by multiple goroutines simultaneously...// // Use context Values only for request-scoped data that transits processes and // APIs, not for passing...carries a deadline, a cancellation signal, and other values across // API boundaries. // // Context's methods...may be called by multiple goroutines simultaneously. type Context interface { // Deadline returns

1.3K3 0

unity3d无需进行装箱拆箱的【事件管理器】

[] methods = GetMethods(evt); if (methods !...= null) { foreach (Delegate m in methods) { try...[] methods = GetMethods(evt); if (methods !...= null) { foreach (Delegate m in methods) { try...= null) { foreach (Delegate m in methods) { try

2733 0

iOS视图控制器之间delegate传值教程

之前在StackOverFlow上看到一篇讲传值（segue传值和delegate传值）的文章，感觉讲的非常清晰，就将delegate部分翻译了一下。有兴趣能够看看。...原文： http://stackoverflow.com/questions/5210535/passing-data-between-view-controllers 译文：为了从ViewControllerB...设置一个delegate属性，同一时候在ViewController.m中synthesize @property (nonatomic, weak) id delegate; 在project中我是这么做的： @propertyiddelegate; 3....( 消息中含有我们要传递的值 ) NSString *itemToPassBack = @“Pass this value back to ViewControllerA”; [self.delegate

5501 0

C++CLI（二）Mono C++CLI Native调用和PInvoke调用

Passing parameters; most existing code is far more complex....This is particularly pertinent when wrapping C++ methods....The unmanaged function pointer that represents the managed delegate lasts as long as the managed delegate...You would need more control if a string is a member of a structure, or if the function uses multiple...If you use a StringBuilder instance multiple times, always call EnsureCapacity() before passing it into

3.6K3 0

点击加载更多

扫码

添加站长进交流群

领取专属 10元无门槛券

手把手带您无忧上云

扫码加入开发者社群

相关资讯

热门标签

活动推荐

运营活动

活动名称

广告关闭