Oops, I spoke too soon. While the error can be cleared, the result of stripping the parentheses is that the SearchTextBox no longer works and remains disabled even after specifying a field list. :(  Any tips, much appreciated.  Update. Found some discussion here - seems to be a VS2012/Blend issue in interpreting paths with ...

Hi everybody, I'm using an Ultimate ListBox Control for WPF.. But the search textbox in the top toolpanel is disabled.. i can't write anything inside..  I set ToolPanelVisibility to '' True'', still doesn't work.   P.S : my listbox contains data. it's not empty    Please help ! 

Hi Richard, The behavior you have experienced with the SyncDataSourceProvider is expected.  Even though we are thinking about changing it in order to minimize the number of queries on the data source, it may query more than a single page.  I cannot give you a precise date, but we are planning to solve this issue on a short to mid term ...

 I have a framework that does not use WCF or RIA services. I have implemented the IndexDataSourceProvider, which works fine for the initial Data retrieval but instead of loading items based on the scroll position it loads items at regular intervals based on QueryRequestInterval.   Regards Ash   

Datagrids are very flexible controls. They often contain a lot of information and provide tools to visually organize this information and sift through it. Before WPF/Silverlight, you could not create a data template for items in a listbox or other data controls. It was not feasible to attempt to present tabular data (e.g., name, age, description, ...