public async Task <IActionResult> Edit(SubModeInfo newValues)
        {
            //get session id (we will use it when updating data and handling errors)
            String sessionID_s = HttpContext.Session.GetString("Session");
            Guid   sessionID   = Guid.Parse(sessionID_s);
            Data   current     = new Data();

            Program.data.TryGetValue(sessionID, out current);

            //not necessary to edit current data bc in submode page we will retrieve all scan informations from db again
            try
            {
                await _session.EditScan(newValues.Scan);
            }
            catch (Exception e)
            {
                // log exception here
                if (current != null)
                {
                    current.message = e.Message.ToString() + " Error";
                }
                await _session.Rollback();
            }
            finally
            {
                _session.CloseTransaction();
            }
            if (current != null)
            {
                current.edited = true;
            }
            return(RedirectToAction("BeforeEdit", "Scan", new { id = newValues.Scan.ID }));
        }