Hi Hansjörg,

I'm not sure I understand exactly what you are asking. And Excel Worksheet doesn't have an Orientation.

If you mean the printing Orientation of the sheet, then I think you can do something like this:

        private void ultraGridExcelExporter1_ExportEnded(object sender, Infragistics.Win.UltraWinGrid.ExcelExport.ExportEndedEventArgs e)
        {
            e.CurrentWorksheet.PrintOptions.Orientation = Infragistics.Documents.Excel.Orientation.Landscape;
        }