Try changing both like CellWidht and LabelWidth

Note: make sure you have defined the fields and CellWidth and LabelWidth in the xaml, otherwise these numbers will be NaN and nothing will happen.

Alex.

also tried cellwidth...no luck...guess the way i set width of cell is wrong?

I wrote handler as below...But it doesn't work...any idea?

Thanks

        void OnInitializeRecord(object sender, Infragistics.Windows.DataPresenter.Events.InitializeRecordEventArgs e)
        {
            DataRecord dr = e.Record as DataRecord;

            if (dr != null && dr.ParentRecord != null)
                dr.Cells[0].Field.Settings.LabelWidth = dr.Cells[0].Field.Settings.LabelWidth - 20;

        }

If you will not be changing this cell's width, you can set it in the XAML. If you need to change it in runtime, you can use InitializeRecord event.

Alex.