private void btnSave_Click(object sender, EventArgs e)
    {
        IList <AppConfig> AppConfigs      = AppConfigService.All().Where(a => (a.IsActive == true) && (a.ConfigProperty == "MaterialImages")).ToList();
        string            ImageNameFilter = txtCode.Text;

        if (!ucFileExplorer.IsSavedImage(AppConfigs, ImageNameFilter))
        {
            RaiseErrorEvent(new ErrorEventArgs());
            return;
        }
        if (Save())
        {
            LoadForm <Materials>();
        }
    }