Prevent Visual Studio debugging breaking on an apparent "unhandled exception"

Question

Please consider this short console app code.

static void Main(string[] args)
{
    try
    {
        Action a = () =>
        {
            throw new ApplicationException("Oops");
        };

        var ar = a.BeginInvoke(null, null);
        ar.AsyncWaitHandle.WaitOne();
        try
        {
            a.EndInvoke(ar);
            Console.WriteLine("No message");
        }
        catch (Exception e)
        {
            Console.WriteLine(e.Message);
        }
    }
    finally
    {
        Console.ReadKey();
    }
}

When run Visual Studio will break on the throw complaining that its unhandled. When executed outside of the debugger the code does what I expect (displays "Oops").

How do I convince Visual Studio to allow the code to execute as it would do in the real world?

Answer 1

You can apply the DebuggerNonUserCode attribute to a method to hide it from the debugger.