Hi

I've been creating a shopping cart system out of modules.  I have a results module and a cart module.  The results module is able to tell the cart to update when an Add button is clicked using OnModuleCommunication. Both modules are inside update panels. 

I've now been asked to add a CustomControl to the skin that displays the text 'X items in the basket'.  How could i update this when the add or remove buttons are clicked?  I was looking into event handlers but wasn't really sure how to do this.  Is anyone able to point me in the right direction?

Simon

That was what i  had originally thought of doing.  However the site allows certain trusted users to view the page in edit mode and add/remove certain modules.  When this happens the basket counter completely fudges with the skin.  On top of that i don't want them to be able to add modules to that pane (although they are trusted users, that doesn't mean they won't do stupid things).

I know there are ways around this but i was hoping there would be another way to do it which would be less work as we have 50+ skins in use and i'm sick of editing them all.  Seemed easier (if possible) to add a custom control to them all, so any changes are done to one single file.  Most of the skin is like this apart from pane's.

I've actually already made it.  The control will display the number of items in the basket as it can grab the information in the Page_load event.  The problem i'm having is i need it to update the same time i add an item to my basket.  For example the product search results and basket that displays each item are in update panels and so can add items without reloading the page.  I want to be able to do the same with the usercontrol without needing to refresh the whole page.

I'm fairly sure this can be achieved with event handlers but i'm having trouble getting them to work as i need to get an instance of the control in my results module. Page.FindControl("mycontrol") doesn't work.