Thread: Add to Cart Issue

Hey,

I tried using <xsl:value-of select="aspdnsf:AddtoCartForm(ProductID, VariantID, 1)" disable-output-escaping="yes"/> twice on my tabbed product page however once I have 2 add to cart button they both stopped working?

Is this a known issue? Can I resolve it?

Thanks

I never resolved this issue and although we just stuck with 1 add to cart we are chaging the page design and now want 2 again however if I do this;

<xsl:value-of select="aspdnsf:AddtoCartForm(ProductID, VariantID, 1)" disable-output-escaping="yes"/>

<xsl:value-of select="aspdnsf:AddtoCartForm(ProductID, VariantID, 1)" disable-output-escaping="yes"/>

Both button dont work... any ideas anyone?

I don't know how to fix this, but I think I know why it's having problems, as this is similar to a problem I have.

Each AddtoCartForm does a validation, and the name of the "form" is based off of the ProductID & VariantID, so if you try to add two for the same product, the validation fails and causes the button not to work.

At least that's the case for me. On a CategoryCondensed page, there are a few products that are mapped to several of the categories, so when they are all on the same page, the validation fails because they are "duplicate" even though I want them on there more than once.

Anyone else know how to get around this?

I've had no joy either, we're stucjk with 1 at the moment.

Anyone find any solution to this?

This feels like the issue I'm having. Interestingly enough, I'm not getting any JavaScript errors or errors in the System Log. I've added the Add To Cart button on my search page and I've also added Product.js to my master page, so I can have the button everywhere and it will show up. However, I still can't figure out why it is posting back but nothing is actually added to the cart.

Ok, I've got this figured out. On any given XMLPackage page that you want to add the Add To Cart button to there are a few things that are needed.

1. You must include something like
   Code:

   <xsl:value-of select="aspdnsf:AddtoCartForm(ProductID, VariantID, 0, 'left')" disable-output-escaping="yes" />

   in the xml.config page.
2. The code-behind of the page that drives the XMLPackage that you are working with needs some coded added, so you must find out which on that is. You can look in the web.config in the <routeTable><routes> section for hints.
3. Once you get to the code-behind page the Page_Load routine needed to have the following added to it:
   
   Code:

               Dim scrptMgr As ScriptManager = Page.Master.FindControl(Of ScriptManager)("scrptMgr")
               scrptMgr.Scripts.Add(New ScriptReference("~/jscripts/product.js"))
   
               If Me.IsPostBack AndAlso IsAddToCartPostBack Then
                   HandleAddToCart()
                   Return
               End If

4. Then, you need to add the following to the same code-behind file:
   
   Code:

           Public ReadOnly Property IsAddToCartPostBack() As Boolean
               Get
                   Return "AddToCart".Equals(CommonLogic.FormCanBeDangerousContent("__EVENTTARGET"), StringComparison.InvariantCultureIgnoreCase)
               End Get
           End Property
   
           Private Sub HandleAddToCart()
               ' extract the input parameters from the form post
               Dim formInput As AddToCartInfo = AddToCartInfo.FromForm(ThisCustomer)
   
               If formInput IsNot AddToCartInfo.INVALID_FORM_COMPOSITION Then
                   Dim success As Boolean = ShoppingCart.AddToCart(ThisCustomer, formInput)
                   AppLogic.eventHandler("AddToCart").CallEvent("&AddToCart=true&VariantID=" & formInput.VariantId.ToString() & "&ProductID=" & formInput.ProductId.ToString() & "&ChosenColor=" & formInput.ChosenColor.ToString() & "&ChosenSize=" & formInput.ChosenSize.ToString())
                   If success Then
                       Dim stayOnThisPage As Boolean = AppLogic.AppConfig("AddToCartAction").Equals("STAY", StringComparison.InvariantCultureIgnoreCase)
                       If stayOnThisPage Then
                           ' some tokens like the shoppingcart qty may already be rendered
                           ' we therefore need to re-display the page to display the correct qty
                           Response.Redirect(Me.Request.Url.ToString())
                       Else
                           Dim returnUrl As String = CommonLogic.GetThisPageName(False) & "?" & CommonLogic.ServerVariables("QUERY_STRING")
   
                           If formInput.CartType = CartTypeEnum.WishCart Then
                               Response.Redirect(ResolveClientUrl("~/wishlist.aspx?ReturnUrl=" & Security.UrlEncode(returnUrl)))
                           End If
                           If formInput.CartType = CartTypeEnum.GiftRegistryCart Then
                               Response.Redirect(ResolveClientUrl("~/giftregistry.aspx?ReturnUrl=" & Security.UrlEncode(returnUrl)))
                           End If
                           ' default
                           Response.Redirect(ResolveClientUrl("~/ShoppingCart.aspx?add=true&ReturnUrl=" & Security.UrlEncode(returnUrl)))
                       End If
                   End If
               End If
   
               Return
           End Sub

These modifications were lifted from the showcategory.aspx.vb page, so you can reference that on your own if there are issues or if you are using a different version of ASPDNSF.