using System;

using System.Linq;

public class Program

{

    public static void Main()

    {

        try {

        DoWork();

        }

        catch(VeryBadException) {

            Console.WriteLine("Ending the app with a very bad exception");

        }

    }

    public static void DoWork()

    {

        try {

            Console.WriteLine(new[]{"a","a","b"}.Single(x=>x=="a"));

        }

        catch(InvalidOperationException){

            Console.WriteLine("Expecting this -- but it's still VeryBad");

            throw new VeryBadException();

        }

        catch(Exception e)

        {

            Console.WriteLine("crap", e.ToString());

        }

    }

}

​

public class VeryBadException : Exception

{

}