Select all elements of a Revit model

Is there an easy way to select all elements of a Revit model?

Regards.

 

Not a simply way but it works:

http://whatrevitwants.blogspot.pt/2015/06/select-all-elements-in-revit-using-list.html

Try looking here also

http://dynamobim.org/forums/topic/get-all-objects-by-parameter/