//管理商品信息
private void ManageGoods_Click(object sender, RoutedEventArgs e)
{
GoodsManagement gm = new GoodsManagement();
gm.ShowDialog();
LoadData();
}
//商品信息管理
private void MenuGoodsManage_Click(object sender, RoutedEventArgs e)
{
GoodsManagement gm = new GoodsManagement();
gm.ShowDialog();
}