using System;

using System.Runtime.ExceptionServices;

public class Program

{

    public static void Main()

    {

        ClientCaller clientCaller = new ClientCaller();

        clientCaller.AutoRate();

        clientCaller.AutoRateUsingThrow();

        clientCaller.AutoRateUsingExceptionDispather();

    }

}

​

class FreightAutoRater

{

    public void AutoRate()

    {

        A();

        A();

    }

​

    public void AutoRateUsingThrow()

    {

        try

        {

            A();

            A();

        }

        catch (Exception ex)

        {

            ex.Data.Add("IAutoRatingInfo", "haha");

            throw;

        }

    }

​

    public void AutoRateUsingExceptionDispather()

    {

        try

        {

            A();

            A();

        }

        catch (Exception ex)

        {

            ex.Data.Add("IAutoRatingInfo", "haha");

            ExceptionDispatchInfo.Capture(ex).Throw();

        }

    }

​

    void A()

    {

        B();

    }

    void B()

    {

        throw new Exception("I am a bad developer.");

    }

}

​

class ClientCaller

{

    public void AutoRate()

    {

        try

        {

            var freightAutoRater = new FreightAutoRater();

            freightAutoRater.AutoRate();

        }

        catch (Exception ex)

        {

            Console.WriteLine("Current code without modification");

            Console.WriteLine(ex.StackTrace);

        }

    }

​

    public void AutoRateUsingThrow()

    {

        try

        {

            var freightAutoRater = new FreightAutoRater();

            freightAutoRater.AutoRateUsingThrow();

        }

        catch (Exception ex)

        {

            Console.WriteLine("AutoRateUsingThrow");

            Console.WriteLine(ex.StackTrace);

        }

    }

​

    public void AutoRateUsingExceptionDispather()

    {

        try

        {

            var freightAutoRater = new FreightAutoRater();

            freightAutoRater.AutoRateUsingExceptionDispather();

        }

        catch (Exception ex)

        {

            Console.WriteLine("AutoRateUsingExceptionDispather");

            Console.WriteLine(ex.StackTrace);

        }

    }

}