Setting filter on headers of an Excel sheet via POI

Question

I generate a sheet, pretty bog standard headers and columns of data.

I want to turn on the \"Filter\" function for the sheet, so the user can easily sort and filter the

Answer 1

I figured out how to do this with NPOI.
You add a CT_AutoFilter to the CT_Table.

I am guessing the it works the same for POI as NPOI.

    cttable.autoFilter = new CT_AutoFilter();
    cttable.autoFilter.@ref = "A1:C5";   // value is data and includes header.