Web pages, Web Forms or MVC?

Hi,
In our Building Company we have done a Windows C# project that covers most of company's demands such as Automation and Flowcharts, Employment, Archives, Stock management and many other big and small applications in an integrated project. Coding levels are determined in the project. I mean we have DB level, Object level and Form level, completely separated.
Today, we need to move some of this applications to web apps. Whats the best solution to migrate to web? We prefer not to write the object classes again.
Web pages, Web Forms or MVC?
Thanks a lot.