public async Task <ActionResult> SubmitDrawNames(DrawNamesDisplayModel model)
        {
            if (!ModelState.IsValid)
            {
                return(PartialView("_DrawNames", model));
            }
            try
            {
                var m = await _secretSantaBl.DrawNamesAsync(model).ConfigureAwait(false);

                m.Saved = true;
                return(PartialView("_DrawNames", m));
            }
            catch (AppException ax)
            {
                ModelState.AddModelError("", ax.AppMessage);
            }
            catch (Exception ex)
            {
                ModelState.AddModelError("", ex.Message);
                _log.LogWarning(ex.Message);
            }
            return(PartialView("_DrawNames", model));
        }