One clarification.  The highlighting was easily set through a simple style.  However, to set the highlighting, I had to create an entire template!!  Setting the style for the TreeView.ItemContainerStyle did not work.  Not sure if this is a problem with the default style of the control (which seems to operate straight on the border control in its template through a setter in the same template.)  However, I have this same scenario outside of an infragistics control, and there when I set the TreeView.ItemContainerStyle, I get tweak the highlighting without any issue.

Another odd issue I noticed is unless the style is declared within the resources of the XamDataPresenter/Grid, when initially viewing the control, the style doesn't take effect.  The custom style only takes effect after re-opening the control.  Seems odd.

Hello masterianvii,

I am glad that you resolved your issue.  I believe that other community members may benefit from this.

Your suggestion worked.  I created a general style for TreeViewItem in the scope of my control and was able to set the padding/highlighting there.

Thanks!

Hello masterianvii, 

I am just checking your progress on the issue. 

If you require any further assistance please do not hesitate to ask.

Hello masterianvii, 

Thank you for your feedback. I can suggest you set new template in order to style the checkboxes in the filter menu.

Please let me know if you need any additional assistance.