Can not find the get_Element API

[Anonymous]

I am following the process of getting floor elements from the link below.

http://thebuildingcoder.typepad.com/blog/2008/10/slab-boundary.html

So I kind of figuring out the document is changing to commandData.Application.ActiveUIDocument.Document;

but still I can not find the 

doc.get_Elements( typeof( Floor ), floors );

by calling the function of  get_Elements.

Is it changed? How can i get the floor elements?

Thanks

[jeremytammik]

Look at the updated version of the CmdSlabBoundary command in The Building Coder samples official repository:

https://github.com/jeremytammik/the_building_coder_samples

https://github.com/jeremytammik/the_building_coder_samples/blob/master/BuildingCoder/BuildingCoder/C...

Cheers,

Jeremy