Using BITS from C#

Here is instructions download a file with BITS. Perhaps to update your app from C# or at least this will get you started. Bits is written in C++ but fourtounately; Microsoft wrote a wrapper called BackgroundCopyManager (backgroundcopymanager.dll). You can read the article and download the assembly here. You need to start a new C# project and add a reference to the dll and also add this namespace to the top of your code.

using Microsoft.Msdn.Samples.BITS;

Here is code to queue a file and download it.

Manager m = new Manager();
Job bj = m.CreateJob("MyJob3");
bj.AddFile("http://localhost/largefile.msi", "destination123.msi");
bj.ResumeJob();

This code will bind a listbox and show the status of each job

Manager myBITS = new Manager();
JobCollection myJobs = myBITS.GetListofJobs(JobType.AllUsers);
myListBox.DataSource = myJobs;

Good luck.