PackagesController.cs

public class PackagesController : Controller
{
    public ActionResult Index()
    {
        return View();
    }

    [HttpPost]
    public ActionResult Upload(HttpPostedFileWrapper uploadFile)
    {
        uploadFile?.SaveAs(Path.Combine(Server.MapPath("~/PackageBin"), uploadFile.FileName));
        return RedirectToAction("Index");
    }
}