Crystal Reports newbie question: binding single .NET WinForm to different reports files at runtime?

I am newbie to Crystal Reports. Is it absolute required to create a
.NET WinForm for each Crystal Reports file? We are developing
hundreds of reports. Most of them are very generic. I wonder if
there is way to have a single .NET Win Form which binds to different
reports file at runtime. Is this feasible? If yes, can someone point
me to the right resources or is there any how-to sample?

thanks,
Michael