Not sure if there is any direct .Net functionality to export data to PDF file.
There are couple ways to achieve the same
1. Use Crystal Report and create report that you want to export and then write as PDF
2. Use iTextSharp: Both free and chargeable version is at
http://sourceforge.net/projects/itextsharp[
^].
3. Finally, have a look at article on CP at
Export Data to Excel, Word, PDF without Automation from DataBase[
^]. This may help to export grid to pdf.
Hope that helps
Milind