public async Task <IActionResult> Create([Bind("Id,Name,Beginn,Ende")] Kurs kurs)
        {
            if (ModelState.IsValid)
            {
                _context.Add(kurs);
                await _context.SaveChangesAsync();

                return(RedirectToAction("Index", "Home"));
                // return RedirectToAction(nameof(Index));
            }
            return(View(kurs));
        }