private void UiCommandFired(object obj)
        {
            switch (obj as string)
            {
            case @"1":
                _type.ConfigName = @"D:\demofile.type";
                _repo.Create(_type);
                Messages.Add($"geschrieben: {_type.ConfigName}");
                break;

            case @"2":

                var file = _repo.Read(@"D:\demofile.type");
                Messages.Add($"gelesen: {_type.ConfigName}");
                break;
            }
        }