using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace ThrowExample
{
    class Program
    {
        public static void DoSomething()
        {
            throw new Exception("Thrown on line 12.");
        }

        public static void LogException(Exception e) { _originalCaughtException = e; }

        public static void ExceptionRethrower()
        {
            try
            {
                DoSomething();
            }
            catch (Exception e)
            {
                LogException(e);
                throw;
            }
        }

        static void Main(string[] args)
        {
            try
            {
                ExceptionRethrower();
            }
            catch (Exception e)
            {
                Console.WriteLine(e);

                Console.WriteLine(object.ReferenceEquals(e, _originalCaughtException));
            }

            Console.WriteLine("Done.");
            Console.ReadLine();
        }

        public static Exception _originalCaughtException;
    }
}