.NET 控制台应用程序中的全局异常处理程序

问题描述

问题:我想在我的控制台应用程序中为未处理的异常定义一个全局异常处理程序.在asp.net中，可以在global.asax中定义一个，在windows应用程序/服务中，可以如下定义

Question: I want to define a global exception handler for unhandled exceptions in my console application. In asp.net, one can define one in global.asax, and in windows applications /services, one can define as below

AppDomain currentDomain = AppDomain.CurrentDomain;
currentDomain.UnhandledException += new UnhandledExceptionEventHandler(MyExceptionHandler);

但是如何为控制台应用程序定义一个全局异常处理程序呢?
currentDomain 似乎不起作用(.NET 2.0)?

But how can I define a global exception handler for a console application ?
currentDomain seems not to work (.NET 2.0) ?

啊，愚蠢的错误.
在VB.NET中，需要在currentDomain前面加上AddHandler"关键字，否则在IntelliSense中看不到UnhandledException事件...
这是因为 VB.NET 和 C# 编译器对事件处理的处理方式不同.

Argh, stupid mistake.
In VB.NET, one needs to add the "AddHandler" keyword in front of currentDomain, or else one doesn't see the UnhandledException event in IntelliSense...
That's because the VB.NET and C# compilers treat event handling differently.

推荐答案

不，这是正确的做法.这完全按照它应该的方式工作，您也许可以从中工作:

No, that's the correct way to do it. This worked exactly as it should, something you can work from perhaps:

using System;

class Program {
    static void Main(string[] args) {
        System.AppDomain.CurrentDomain.UnhandledException += UnhandledExceptionTrapper;
        throw new Exception("Kaboom");
    }

    static void UnhandledExceptionTrapper(object sender, UnhandledExceptionEventArgs e) {
        Console.WriteLine(e.ExceptionObject.ToString());
        Console.WriteLine("Press Enter to continue");
        Console.ReadLine();
        Environment.Exit(1);
    }
}

请记住，您无法以这种方式捕获由抖动生成的类型和文件加载异常.它们发生在您的 Main() 方法开始运行之前.捕捉这些需要延迟抖动，将有风险的代码移动到另一个方法中并对其应用 [MethodImpl(MethodImplOptions.NoInlining)] 属性.

Do keep in mind that you cannot catch type and file load exceptions generated by the jitter this way. They happen before your Main() method starts running. Catching those requires delaying the jitter, move the risky code into another method and apply the [MethodImpl(MethodImplOptions.NoInlining)] attribute to it.

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