public static void UpdateProduct(int id, int productId, string value, string item)
{
ProductImp Imp = new ProductImp();
Product product = Imp.GetProductById(productId);
//根据修改后的规格型号，检查系统中是否已经存在此商品
if (item == "name")
{
product.Name = value;
}
else
{
product.Size = value;
}
int newId = Imp.GetProductId(product.Name, product.Size, product.Material);
if (newId == 0)
{
//不存在此规格型号的商品时，创建新商品
newId = Imp.InsertProduct(product);
}
PurchaseDetailImp detailImp = new PurchaseDetailImp();
detailImp.UpdateProductId(id, newId);
}
public Product GetProductById(int id)
{
return(imp.GetProductById(id));
}