Will main thread catch exception thrown by another thread?

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 cau开发者_JAVA技巧ght in the catch block?

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.

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