using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("If we do a simple throw, the stacktrace should show the nitty-gritty details:\n");

​

        try

        {

            new PreserveStack().Do();

        }

        catch (Exception ex)

        {

            Console.WriteLine(ex.StackTrace);

        }

        Console.WriteLine("\nIf we do an also-simple throw ex, the stacktrace is reset:\n");

​

        try

        {

            new ResetStack().Do();

        }

        catch (Exception ex)

        {

            Console.WriteLine(ex.StackTrace);

        }

    }

}

​

public class PreserveStack

{

    public string Do()

    {

        try

        {

            return new ImportantClass().DoSomething();

        }

        catch (Exception)

        {

            throw;

        }

    }

}

​

public class ResetStack

{

    public string Do()

    {

        try

        {

            return new ImportantClass().DoSomething();

        }

        catch (Exception ex)

        {

            throw ex;

        }

    }

}

​

public class ImportantClass

{

    public string DoSomething()

    {

        return new LessImportantButJustAsSpecial().DoSomething();

    }

}

​

public class LessImportantButJustAsSpecial

{

    public string DoSomething()

    {

        return new NowWereInTheWeeds().DoSomething();

    }

}

​

public class NowWereInTheWeeds

{

    public string DoSomething()

    {

        throw new ArgumentException("What does I did?? There are so many weeds down here!");

    }

}

​