I have an ObservableCollection one of whose member properties is an ObservableCollection. I can get the first level to display correctly, but haven't much idea on how to get the nested collection working. I have tried setting up the DataRelationDetailDescription and DetailConfiguration tags but I don't see where the binding to the nested ...

Hey Jenny, I tried with the post you mentioned. But it is not working. The ComboBox is show empty still. I changed my CellEditor resource as,          <xceed:CellEditor x:Key=''SourceFieldEditStyle''>            ...

Hi Jenny, See the below which is the CellEditor I used before for the ComboBox which is not working. <xceed:CellEditor x:Key=''SourceFieldEditStyle''>            ...