Reset text to placeholder

[Joe]

I am trying to fid a way to reset the text on the ListPicker to the original placeholder text.  I use the ListPicker to run a filter on another list and when they clear this filter I want the text to return to the original.  I have searched through the properties on the ListPicker and cannot find where this 'picked' text value is

Thanks - joe

[Joe]

Found it:

DisplayStringFormat property