Exporting Reports

Hi everybody.

I tried exporting a crystal report version 13 report to PDF through Export button on CrystalReportViewer control toolbar. But I it threw exception (No reference set for the object)

My questions are:

1. is it possibble to export a report to other format, e.g PDF by clicking the export button on the CrystalReportViewer control toolbar without any custom code?
2. if it is possible, how?
3. if it is not possible, how do I attach custom code for exporting report to PDF to the export button on the CrystalReportViewer control toolbar?

Thanks for your usual assistance

Paul Aziz