Hi I'm using a twwdbgrid along with a twwfilterdialog. When i click on the title buttons on the grid I want to sort. So I need to close and reopen the query. This then clears the filter. I'm using filtermethod byfilter. I've tried saving off the fieldinfo and reapplying that using lFieldInfo := TList.Create; CopyList(dlgFilterImages.FieldInfo, lFieldInfo); ..do work.. dlgFilterImages.FieldInfo.Assign(lFieldInfo); dlgFilterImages.ApplyFilter; But i'm getting an error. What is the best way to do this? Thanks