public async Task <ActionResult> Delete(int id)
        {
            if (ModelState.IsValid)
            {
                var major = await InstitutionManager.FindMajorByIdAsync(id);

                if (major != null)
                {
                    await InstitutionManager.DeleteMajorAsync(major);
                }
            }
            return(RedirectToAction("AllMajor"));
        }