public ActionResult Edit(ScreenShot screenshot)
 {
     if (ModelState.IsValid)
     {
         db.Entry(screenshot).State = EntityState.Modified;
         db.SaveChanges();
         return RedirectToAction("Index");
     }
     ViewBag.ProjectID = new SelectList(db.Projects, "ProjectID", "alias", screenshot.ProjectID);
     return View(screenshot);
 }
        public ActionResult Create(ScreenShot screenshot)
        {
            if (ModelState.IsValid)
            {
                db.ScreenShots.Add(screenshot);
                db.SaveChanges();
                return RedirectToAction("Index");  
            }

            ViewBag.ProjectID = new SelectList(db.Projects, "ProjectID", "alias", screenshot.ProjectID);
            return View(screenshot);
        }