Thanks for reply. exactly what I need.

Thanks for reply. But as far as I know ColumnFilters just filter the rows based on conditions; which means it doesn't display those rows not meeting the criteria. but I want to change appearance of rows not just stop displaying them. how can I do that with ColumnFilters.

Thanks a lot. It worked like a charm!!. I set positions using OriginX for every column or group

<code>

      var g1 =  grid.DisplayLayout.Bands[0].Groups.Add("g1", "group");

      var col = grid.DisplayLayout.Bands[0].Columns;

      var grp = grid.DisplayLayout.Bands[0].Groups; 

      col["f2"].RowLayoutColumnInfo.ParentGroup = g1;

      col["f3"].RowLayoutColumnInfo.ParentGroup = g1;

      col["f1"].RowLayoutColumnInfo.OriginX = 0;

      grp["g1"].RowLayoutGroupInfo.OriginX = 2;

      col["f2"].RowLayoutColumnInfo.OriginX = 0;

      col["f3"].RowLayoutColumnInfo.OriginX = 2;

</code>

Thank you so much. I will try this and let you know the result.