I can explain this behaviour in xceed wpf data grid demo.....Steps to reproduce... 1. open this link       http://download3.xceedsoft.com/demo/gridwpf/Xceed.Wpf.DataGrid.Samples.LiveExplorer.xbap 2.  Click on displaying data. 3. Click on ''Ship Via'' Column to sort it in Descending Order. 4. Scroll the vertical bar to the top so as to reach ...

Hi, I am using multibinding to show user image along with the Firstname and lastname. As it was implemented in sample application provided by xceed. Now if i want to implement sorting on this column it will sort according to the ID used for this column.But sorting like this does not make any sense. So if i want to sort it with the firstname only ...