public static void Run()
{
// ExStart:1
// The path to the documents directory.
string dataDir = RunExamples.GetDataDir(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);
Workbook workbook = new Workbook(dataDir + "sample.xlsx");
Worksheet worksheet = workbook.Worksheets[0];
// Grouping first six rows and first three columns
worksheet.Cells.GroupRows(0, 5, true);
worksheet.Cells.GroupColumns(0, 2, true);
worksheet.Outline.SummaryColumnRight = true;
// Saving the modified Excel file
workbook.Save(dataDir + "output.xls");
// ExEnd:1
}
}