UnobservedTaskException是不是杀死进程 [英] UnobservedTaskException is not killing the process

问题描述

我想了解.NET 4.0的UnobservedTaskException问题，所以我写了folloging代码

I am trying to understand the UnobservedTaskException issue in .NET 4.0 so I wrote the folloging code

TaskScheduler.UnobservedTaskException += (sender, eventArgs) => Console.WriteLine("unobserved");

Task.Factory.StartNew(() => { throw new Exception(); }, TaskCreationOptions.LongRunning);
using (var autoResetEvent = new AutoResetEvent(false))
{
    autoResetEvent.WaitOne(TimeSpan.FromSeconds(10));
}
Console.WriteLine("Collecting");
GC.Collect();
GC.WaitForPendingFinalizers();

Console.WriteLine("Still working ");
Console.ReadKey();
Console.WriteLine("Still working ");
Console.WriteLine("Still working ");
Console.ReadKey();

UnobservedTaskException烧成，然后我的应用程序只是继续工作。然而，根据 MSDN 的过程应该被杀死。谁能告诉我为什么吗？

UnobservedTaskException is fired and then my app just keeps working. However according to MSDN the process should be killed. Can anyone tell me why ?

推荐答案

如果您运行的机器，只有.NET 4.0上运行此代码安装它确实会崩溃

If you run this code on a machine that only has .Net 4.0 installed it will indeed crash.

由于所有版本的.Net 4.0以来都是就地即使你的目标你的应用程序.NET 4.0，将在更高版本的机器上运行更新有一个。

Since all the .Net versions since 4.0 were in-place updates even if you target your application for .Net 4.0 it will run on a later version on a machine that has one.

要得到，而在可以添加到您的app.config文件（如的 TaskScheduler.UnobservedTaskException事件）：

To get the same behavior of .Net 4.0 while running on a later version you can add this to your app.config file (as described in TaskScheduler.UnobservedTaskException Event):

<runtime> 
    <ThrowUnobservedTaskExceptions enabled="true"/> 
</runtime> 

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