HI,

 Wire up the Exporter's CellExported Event and change the cell value

 Here is the code snippets:
 

 DataPresenterExcelExporter exporter = new DataPresenterExcelExporter();

  ExportOptions eo = new ExportOptions();

   exporter.CellExporting += new EventHandler<CellExportingEventArgs>(exporter_CellExporting);

  exporter.CellExported += new EventHandler<CellExportedEventArgs>(exporter_CellExported);

  exporter.Export(this.xgrid1, "xamDataPresenter1.xlsx", WorkbookFormat.Excel2007,eo);

 void exporter_CellExported(object sender, CellExportedEventArgs e)    

     {

            if (e.Field.Name == "Married")  

           {                 if (e.Value.ToString().ToUpper() == "TRUE")  

                   e.CurrentWorksheet.Rows[e.CurrentRowIndex].Cells[e.CurrentColumnIndex].Value = "Married";  

               else   

                  e.CurrentWorksheet.Rows[e.CurrentRowIndex].Cells[e.CurrentColumnIndex].Value = "Single";       

      }             //throw new NotImplementedException();                    }