Unable to get number of copies of a print job in C#

Question

I am creating a custom print job monitoring application in C# Win Forms, I am able to get most the print job information using PrintJobInfoColletion but I am not able to get number of copies here is my code so far:

PrintJobInfoCollection jobs = pq.GetPrintJobInfoCollection();
        foreach (PrintSystemJobInfo job in jobs)
        {

            string[] row = new string[] { job.JobIdentifier.ToString(),
                                          pq.Name,
                                          job.Name,
                                          job.JobStatus.ToString(),
                                          job.Submitter,
                                          job.NumberOfPages.ToString(),
                                          ((job.JobSize / 1024f) / 1024f).ToString("N2") + " MB",
                                          job.TimeJobSubmitted.ToLocalTime().ToString() };
            dataGridView1.Rows.Add(row);
        }