public ActionResult Edit(Model_category obj)
        {
            tbl_category tb = db.tbl_categories.Where(x => x.cat_id == obj.cat_id).Single <tbl_category>();

            tb.cat_id   = obj.cat_id;
            tb.cat_name = obj.cat_name;
            tb.cat_des  = obj.cat_des;
            db.SubmitChanges();
            return(RedirectToAction("Index"));
        }
        public ActionResult Create(Model_category obj)
        {
            tbl_category tb = new tbl_category();

            tb.cat_name = obj.cat_name;
            tb.cat_des  = obj.cat_des;
            db.tbl_categories.InsertOnSubmit(tb);
            db.SubmitChanges();
            return(RedirectToAction("Index"));
        }
        public ActionResult Delete(Int16 id)
        {
            Model_category obj = db.tbl_categories.Where(x => x.cat_id == id).Select(x => new Model_category()
            {
                cat_id   = x.cat_id,
                cat_name = x.cat_name,
                cat_des  = x.cat_des
            }).SingleOrDefault();

            return(View(obj));
        }