The event handler method receives the following arguments:
sender
A ListContainer instance, which is the source of the event. This object will be passed to the handler function as the first argument.
args
A NotifyCollectionChangingEventArgs instance, which contains event data. This object will be passed to the handler function as the second argument.

The following code handles the itemsChanging event of a ListView object. The ListView class derives from ListContainer.

JavaScript  Copy Code
// create the ListView control nodeList = new ui.ListView(document.getElementById("nodeList")); nodeList.itemsChanging.addEventListener(itemsChangingEventHandler); function itemsChangingEventHandler(sender, args) {  if(args.item.title == "Room A")  {       //cancel the change       args.cancel = true;  } }

ListContainer Members
ListContainer Class
MindFusion.Common.UI Namespace