How to upload files in ASP.NET MVC 5 to Database

I am trying to implement a file upload to my existing project. I have a reports table within my database and it contains a FilePath column.

public string FilePath {get; set;}

I have an existing Save action that handles both new and existing entries:

[HttpPost]
[ValidateAntiForgeryToken]
[Authorize(Roles = "AdminManager")]
public ActionResult Save(Report report, HttpPostedFileBase file)
{
    if (!ModelState.IsValid)
    {
        var viewModel = new ReportFormViewModel
        {
            Report = report,
            Members = _context.Members.ToList(),
            Subjects = _context.Subjects.ToList()
        };
        return View("ReportForm", viewModel);
    }

    if (report.Id == 0)
        _context.Reports.Add(report);

    else
    {
        var reportInDb = _context.Reports.Single(e => e.Id == report.Id);

        reportInDb.Name = report.Name;
        reportInDb.MemberId = report.MemberId;
        reportInDb.SubjectId = report.SubjectId;
        reportInDb.Date = report.Date;
    }

    _context.SaveChanges();
    return RedirectToAction("Index", "Report");
}

I have already changed the form view to take a file so all that needs updating is the controller. I tried to find examples online but they mostly implemented it into a create action rather then what I have.