public ActionResult Edit(int id, Main mains)
 {
     try
     {
         using (mvcar mv = new mvcar())
         {
             mv.Entry(mains).State = EntityState.Modified;
             mv.SaveChanges();
         }
         return(RedirectToAction("Index"));
     }
     catch
     {
         return(View());
     }
 }
        public ActionResult Create(Main mains)
        {
            try
            {
                using (mvcar mv = new mvcar())//this creats the data in the database
                {
                    mv.Mains.Add(mains);
                    mv.SaveChanges();
                }

                return(RedirectToAction("Index"));
            }
            catch
            {
                return(View());
            }
        }
        public ActionResult Delete(int id, FormCollection collection)
        {
            try
            {
                using (mvcar mv = new mvcar())
                {
                    Main car = mv.Mains.Where(x => x.Id == id).FirstOrDefault();
                    mv.Mains.Remove(car);
                    mv.SaveChanges();
                }

                return(RedirectToAction("Index"));
            }
            catch
            {
                return(View());
            }
        }