public ActionResult DeleteConfirmed(int id)
        {
            MateriasTb materiasTb = db.MateriasTb.Find(id);

            db.MateriasTb.Remove(materiasTb);
            db.SaveChanges();
            return(RedirectToAction("Index"));
        }
 public ActionResult Edit([Bind(Include = "id_materia,nombre,clave_materia,plan_estudios")] MateriasTb materiasTb)
 {
     if (ModelState.IsValid)
     {
         db.Entry(materiasTb).State = EntityState.Modified;
         db.SaveChanges();
         return(RedirectToAction("Index"));
     }
     return(View(materiasTb));
 }
        // GET: MateriasTbs/Edit/5
        public ActionResult Edit(int?id)
        {
            if (id == null)
            {
                return(new HttpStatusCodeResult(HttpStatusCode.BadRequest));
            }
            MateriasTb materiasTb = db.MateriasTb.Find(id);

            if (materiasTb == null)
            {
                return(HttpNotFound());
            }
            return(View(materiasTb));
        }