public async Task load()
        {
            TagDataService tagDataService = new TagDataService(new EntityFramework.TimetableManagerDbContext());

            TagList = await tagDataService.GetTags();

            TagList.ForEach(e =>
            {
                Tag l     = new Tag();
                l.TagId   = e.TagId;
                l.TagName = e.TagName;
                TagDataList.Add(l);
            });
        }