Adding filters to an Excel document using C1Excel

Question

Can someone show me how to add filters and how to freeze rows in excel using C1Excel(ComponentOne) and C#?

 //step 1: create a new workbook
                C1XLBook logBook = new C1XLBook();
                XLSheet logSheet = logBook.Sheets[0];

I have created XLSheet, but no property to add filters.