NotifyCollectionChangingEventArgs Constructor

Initializes a new instance of the NotifyCollectionChangingEventArgs class.

Namespace: MindFusion.Common
File: Events.js

 Syntax

JavaScript

function NotifyCollectionChangingEventArgs (action, [changes, [index]])

 Parameters

action

NotifyCollectionChangedAction. The action that caused the event.

changes

Optional.

Type: Array
Array. The items affected by the change.

index

Optional.

Type: Number
Number. The index where the change occurred.

 Example

The following code handles the collectionChanging event of the decorations property of a DecorationLayer object in a map.

JavaScript

var m = MindFusion.Mapping;var markers = new m.DecorationLayer("Images");...................
//add some Marker-s to the decorations property
......................markers.decorations.collectionChanging.addEventListener(handleCollectionChanging);
function (handleCollectionChanging) (sender, args )
{
     if(args.action == m.NotifyCollectionChangedAction.Add)
     {
          args.cancel = true;
     }
}