MVC(3) handleUpdate

Question

I am going through this tutorial on codeplex, which is the MusicStore application.

In a senario it is adding music records to the shopping basket. Then it also allo

Answer 1

It is not referenced in the code, but it is mentioned in the tutorial. Seems like a leftover to me.

Quote from http://www.asp.net/mvc/tutorials/mvc-music-store-part-8:

...instead of using an Html.ActionLink to remove items from the cart, we’ll use Ajax.ActionLink:

@Ajax.ActionLink("Remove from cart", "RemoveFromCart", 
new { id = item.RecordId }, new AjaxOptions { OnSuccess = "handleUpdate" })

This method works very similarly to the Html.ActionLink helper method, but instead of posting the form it just makes an AJAX callback to our RemoveFromCart. The RemoveFromCart returns a JSON serialized result, which is automatically passed to the JavaScript method specified in our AjaxOptions OnSuccess parameter – handleUpdate in this case. The handleUpdate Javascript function parses the JSON results and performs four quick updates to the page using jQuery:

1. Removes the deleted album from the list
2. Updates the cart count in the header
3. Displays an update message to the user
4. Updates the cart total price