protected void ddlProducts_SelectedIndexChanged(object sender, EventArgs e) { ProductService productContext = new ProductService(new BizCustomerOrder()); object unitPrice = productContext.GetProductPriceByProductID(int.Parse(ddlProducts.SelectedValue)); if(unitPrice!=null) { labUnitPrice.Text = unitPrice.ToString(); } }
private void CreateList() { ProductService productContext = new ProductService(new BizCustomerOrder()); IEnumerable<Products> productList = productContext.GetProducts(); ddlProducts.DataSource = productList; ddlProducts.DataTextField = "ProductName"; ddlProducts.DataValueField = "ProductID"; ddlProducts.DataBind(); labUnitPrice.Text = productList.FirstOrDefault().UnitPrice.ToString(); //ddlProducts.Items.Insert(0, new ListItem("(請選擇)", "0")); ShipperService shipperrContext = new ShipperService(new BizCustomerOrder()); ddlShippers.DataSource = shipperrContext.GetShippers(); ddlShippers.DataTextField = "CompanyName"; ddlShippers.DataValueField = "ShipperID"; ddlShippers.DataBind(); EmployeeService empContext = new EmployeeService(new BizCustomerOrder()); ddlEmployee.DataSource = empContext.GetEmployees(); ddlEmployee.DataTextField = "FirstName"; ddlEmployee.DataValueField = "EmployeeID"; ddlEmployee.DataBind(); }