CrystalReportViewer Toolbox print button event

[Kit Fisto]

Hi every one. I don't know if this is the right section to make this question. So if it isn't sorry ;) How can I use the click event of the print button on the toolbox of an crystalreportviewer? The problem is that a need to update a field in my database when the report is for the fist time printed. Thank you all.