Hi Dave,
In the previous post we have mistakenly updated the sample in WPF TreeViewAdv control with CollapseImage , ExpandImage and LeftImage. Now we have changed to Silverlight TreeviewAdv control with same behavior. Please find the sample under the following location.
Please let us know if you have any queries.
Regards,
Sakthi
TreeViewAdvSilverCollapse_a2a2ad68.zip