public ActionResult Edit(Item item, int CategoryId)
 {
     if (CategoryId != 0)
     {
         _db.CategoryItem.Add(new CategoryItem()
         {
             CategoryId = CategoryId, ItemId = item.ItemId
         });
     }
     _db.Entry(item).State = EntityState.Modified;
     _db.SaveChanges();
     return(RedirectToAction("Index"));
 }
 public ActionResult Edit(Category category)
 {
     _db.Entry(category).State = EntityState.Modified;
     _db.SaveChanges();
     return(RedirectToAction("Index"));
 }