public async Task <ActionResult> Delete(string id)
        {
            if (id == null)
            {
                return(new HttpStatusCodeResult(HttpStatusCode.BadRequest));
            }

            Students student = await StudentDocumentDB <Students> .GetStudent(id);

            if (student == null)
            {
                return(HttpNotFound());
            }

            return(View(student));
        }
        public async Task <ActionResult> Details(string id)
        {
            Students student = await StudentDocumentDB <Students> .GetStudent(id);

            return(View(student));
        }