I have a small website written in asp.net c#. It consists of 7 pages or less and a master page, connected to a database and references a class library. How to convert it to a visual web part in SharePoint 2013? My colleague advised me of copying the codes from the website solution to a visual web part solution as long as my website solution targets .Net framework 4.0. The question is, is his suggestion feasible? are there any other ways of doing it besides iframes and my colleague's suggestion?
Take into consideration I'm new to SharePoint development and I'm using visual studio 2012.