主线程是否会捕获另一个线程引发的异常？

Question

If I have code like this:

try
{
    Thread t = new Thread(new ThreadStart(wc.LocalRunProcess));
    t.IsBackground = true;
    t.Start();
}
catch (Exception ex)
{
    //do something with ex
}

Will the exception thrown by thread t be caught in the catch block?

Answer 1

No. It will not catch any exceptions in your other thread t . You will have to catch them in that thread and deal with them appropriately.

However, I believe the AppDomain's UnhandedException event will report it.

Answer 2

Take a look at System.ComponentModel.BackgroundWorker! It has exception and cancellation handling.