Workbook workbook = new Workbook();
Worksheet sheet = workbook.Worksheets[0];
sheet.Range["B2"].Text = "Home page";
sheet.Range["B2"].Borders.LineStyle = LineStyleType.Thin;
sheet.Range["B2"].Borders[BordersLineType.DiagonalDown].LineStyle = LineStyleType.None;
sheet.Range["B2"].Borders[BordersLineType.DiagonalUp].LineStyle = LineStyleType.None;
sheet.AutoFitColumn(2);
workbook.SaveToFile("Sample.xls");
System.Diagnostics.Process.Start("Sample.xls");