Thread laserThread = new Thread((ThreadStart)delegate
                    {
                        try
                        {
                            laserResult = CreateLaser(param1, param2);
                        }
#if DEBUG
                        catch (Exception ex)
                        {
                            throw ex;
                        }
#endif
                        finally
                        {
                            mre.Set();
                        }
                    });
                laserThread .Start();

                RectangleList rectangles = new RectangleList(DetectLaserRectangles(param3));
                mre.WaitOne();
                mre.Reset();

  Task.Factory.StartNew(
                    () =>
                        {
                            Parallel.For(0,
                                         items.Count,
                                         i =>
                                             {
                                                 var reader = new MyReader(items[i]);
                                                 reader.Read();
                                                reader.Close();
                                             });