public class DonationContext:DbContext
{
    public DbSet<DonorModel> DonorModel { get; set; }


}

private DonationContext dc = new DonationContext();
public ActionResult Edit()
    {
        return View();
    }

    [HttpPost]
    public ActionResult Edit(int id)
    {
        if (ModelState.IsValid)
        {
            dc.DonorModel.Add(donorModel);
            dc.SaveChanges();
            return RedirectToAction("Index");
        }
        return View(donorModel);
    }