public async Task <IActionResult> Create([Bind("EquipmentID, OpenNumber"), FromForm] Equipment equipment) { if (ModelState.IsValid && !_context.Equipment.Any(e => e.EquipmentID == equipment.EquipmentID)) { _context.Add(equipment); await _context.SaveChangesAsync(); return(RedirectToAction(nameof(Index))); } return(BadRequest("操作失败")); }