I need to reopen this discussion.
Actually "XData Value filtering" is possible, unfortunately only for some types of Entities.
I build my filter like that:
TypedValueList tvl = new TypedValueList(); tvl.Add(new TypedValue((short)DxfCode.XDataStart)); tvl.Add(new TypedValue((short)DxfCode.ExtendedDataAsciiString, xdataValue));
My filter works on MTexts, Tables, Polylines and Ellipses
It does NOT WORK for Lines, Arcs and Circles
Does anybody know the reason for that?