public IActionResult UpdateProduct(string product_id, string product_name, IFormFile product_img, string product_category, string product_price, string product_discount, string filter, string old_product_img, string product_info, string page) { ThucDon editProduct = new ThucDon { MaThucDon = int.Parse(product_id), TenThucDon = product_name, MaLoai = int.Parse(product_category), Gia = float.Parse(product_price), KhuyenMai = int.Parse(product_discount), MoTa = product_info }; if (product_img == null) { editProduct.HinhAnh = old_product_img; } else { string path_to_image = "wwwroot/uploads/product/" + product_img.FileName; using (var stream = new FileStream(path_to_image, FileMode.Create)) { product_img.CopyTo(stream); } editProduct.HinhAnh = product_img.FileName; } ThucDonViewModel query = new ThucDonViewModel(db); query.EditThucDon(editProduct); var response = query.GetDataWithCateByPage(filter, int.Parse(page)); return(Json(response)); }