webpage(html) to save as pdf

Hi All,


I am designing a web page where user can select different options and finally thee will be map drawn based on the selection. Now the final result(maps) drawn in html(webpage). I want to make that page save as pdf. Users can save it as pdf and if they want download or print it.
My question is there any code where web page can be saved as pdf if user want to like a button at the end of the page or something like that. I googled it but to convert html to pdf there are some tools for it and its not free. I am designing the page in C#, VS 2005. Is there anything simple method? or input is highly appreciated.


Thanks!
Terisa

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