How to print Crystal report. Please Help

Question

I have Two Buttons on my Page 1-SHOW and 2-PRINT. The SHOW button Displays a report through the dataset and ReportDocument and the code is working fine.Ok But my question is: What code should i write behind the PRINT Button (Click Event) so that user can see the Print Dialog Box and print the (already loaded) report to printer. Please anybody send me a simple code. Thanks