When I stated using cell editors with "CellEditorBinding", I get a Xaml parse exception "Cannot convert the value in attribute 'Source' to object of type 'System.Object'. A TwoWay or OneWayToSource binding cannot work on the read-only property. The property in question is my data table inside my dataset. It is indeed readonly, But this is just an object refrenece. The columns within the table are not readonly. It seems to me that some one is checking at the wrong level. I don't know if this some one is Xaml or Xceed.
I added a dummy set procedure to the property just to get around this error. But the property is inside the dataset created by dataset designer. And every time I change my dataset, designer changed the code back to readonly.