调试器不破/停止在异步方法例外 [英] Debugger not breaking/stopping for exceptions in async method

问题描述

当一个调试器附加到一个.NET过程中，它（通常）停止时未处理的异常。

When a debugger is attached to a .NET process, it (usually) stops when an unhandled exception is thrown.

不过，这似乎并没有当你在是工作异步方法。

However, this doesn't seem to work when you're in an async method.

在在以下code列出我尝试过的方案：

The scenarios I've tried before are listed in the following code:

class Program
{
    static void Main()
    {
        // Debugger stopps correctly
        Task.Run(() => SyncOp());

        // Debugger doesn't stop
        Task.Run(async () => SyncOp());

        // Debugger doesn't stop
        Task.Run((Func<Task>)AsyncTaskOp);

        // Debugger stops on "Wait()" with "AggregateException"
        Task.Run(() => AsyncTaskOp().Wait());

        // Throws "Exceptions was unhandled by user code" on "await"
        Task.Run(() => AsyncVoidOp());

        Thread.Sleep(2000);
    }

    static void SyncOp()
    {
        throw new Exception("Exception in sync method");
    }

    async static void AsyncVoidOp()
    {
        await AsyncTaskOp();
    }

    async static Task AsyncTaskOp()
    {
        await Task.Delay(300);
        throw new Exception("Exception in async method");
    }
}

我缺少的东西吗？我怎样才能让调试器打破了例外，上/停止 AsyncTaskOp（）？

推荐答案

的调试菜单下，选择例外... 。在例外对话框，旁边的公共语言运行库异常行检查时抛出框。

Under the Debug menu, select Exceptions.... In the Exceptions dialog, next to the Common Language Runtime Exceptions line check the Thrown box.

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