public void BindDataByProductId(int productId)
{
List <Product> products = ProductService.GetProductListById(productId);
dgvProduct.DataSource = products;
Product product = ProductService.GetProductById(productId);
DisplayProduct(product);
List <StockIn> inventorys = StockInService.GetInventoryListByProductId(productId);
dgvInventory.DataSource = inventorys;
}