LocationCollection not tagged as ScriptableType but can be instantiated in script (How come?)

Question

I'm working on a small silverlight application that involves passing some data between javascript and silverlight. I am also using the silverlight virtual earth control.

The weirdness I have come across is that is possible to register Microsoft.Maps.MapControl.LocationCollection as a script createable type and instantiate and pass it to a ScriptableMember. This is great, but I can't see where LocationCollection is tagged as a ScriptableType - am I missing something obvious.

Code in App.xaml.cs - Application_Startup

HtmlPage.RegisterCreateableType("mapLocationCollection", typeof(Microsoft.Maps.MapControl.LocationCollection));

Javascript code that works!

var locs = SLPlugin.Content.services.createObject('mapLocationCollection');

I thought that in order in instantiate an instance of the class in JavaScript the type needed to be tagged as [ScriptableType] and the type needs to be registered as a createable type. As far as I can tell LocationCollection (or any of it's superclasses) have this attribute.

Can anyone out there help me square this in my mind?

Answer 1

No the ScriptableType attribute specifies that all public properties, methods and events on the type are scriptable. This simply saves having mark them all with ScriptableMember.