I have got a Custom Field Control in SP2007 (inheriting BaseFieldControl) with an ASP.NET TreeView control in the ascx. This works fine with checkboxes enabled so Users can select from the tree.
But I wanted to lazy load the child nodes when they click on the plus sign using the TreeNodePopulate event which I've added in the CreateChildNodes method.
When I click on the plus sign it does do a postback into the Get method of the Value overriden property, but it never gets to the EventHandler method.
Is this a common thing with EventHandlers in Custom Field Controls?