web form templates??

I have MANY forms to write, which really isn't a problem, but I don't want to create a seperate page for each form. I'm wondering is there a way to write the forms as a class or its own object (maybe even a template) and then call it based on some criteria of a drop-downlist the user selects? See there are two drop downlists and when they select certain items in the DDL it will bring up one of the forms I have to write, depending on their selection. Each form will have its own set of calculations to perform.

Hope this makes sense. Thanks for all the help guys!