How to handle error on other thread?

Question

Hi,

I'm trying to handle errors that have occurred on other threads the .NET CF program is like below:

static void Main()
{
    Thread t = new Thread(Start);
    t.Start();
    ...
}

void Start()
{
     ... Exception here

}

In my situation, putting try catch in the Start method is impossible. How can I handle it in the global code?

Answer 1

You can use AppDomain.UnhandledException but you cannot "recover" an application from this, the best you can do is display a message to the user and fail gracefully.

Answer 2

Without going into best practices in exception handling, you can use a shim method to do what you want, e.g.

static void Main()
{
  Thread t = new Thread(Shim);
  t.Start();
  ...
}

void Shim()
{
  try
  {
    Start();
  }
  catch
  {
    //If there's something you can really do about it...
  }
}

void Start()
{
  ... Exception here

}

Update

If you are referring to the way NUnit ignores exceptions on non-test threads, please see a blog article I wrote that describes the same issue\feature with the ReSharper test runner. It's controlled by legacyUnhandledExceptionPolicy.

http://gojisoft.com/blog/2010/05/14/resharper-test-runner-hidden-thread-exceptions/

Answer 3

Something similar:

catching-exceptions-from-another-thread