p = Launch("second");
                p.StandardOutput.ReadToEnd();
                p.WaitForExit();

using System;
using System.Diagnostics;
using System.IO;
using System.Runtime.InteropServices;

namespace threadsubproc
{
    class Program
    {
        static void Main(string[] args)
        {
            int ini = Environment.TickCount;

            string name = "first";

            try
            {
                if (args.Length == 1)
                {
                    name = args[0];
                }

                Process p = null;

                switch (name)
                {
                    case "first":
                        p = Launch("second");
                        p.StandardOutput.ReadToEnd();
                        p.WaitForExit();

                        return;
                    case "second":
                        Launch("third");
                        return;
                    case "third":
                        System.Threading.Thread.Sleep(15000);
                        return;
                }
            }
            catch (Exception e)
            {
                File.AppendAllText(name, e.Message + " " + e.StackTrace);
            }
            finally
            {
                File.AppendAllText(name, string.Format(
                    "{0} - {1} finished. {2} ms", DateTime.Now, name, Environment.TickCount - ini));
            }
        }

        static Process Launch(string arg)
        {
            Process p = new Process();
            p.StartInfo.UseShellExecute = false;
            p.StartInfo.FileName = "threadsubproc";
            p.StartInfo.Arguments = arg;

            p.StartInfo.RedirectStandardOutput = true;
            p.StartInfo.RedirectStandardInput = true;
            p.StartInfo.RedirectStandardError = true;
            p.StartInfo.CreateNoWindow = true;

            p.Start();

            return p;
        }
    }
}