Flow chart coding in Visual Studio

Question

Dear All, I'm posting here after spending a week of googling without getting a clear clue. How can I use Visual studio to develop an application like Visio but the built flowchart would result in a code behind that can be run , What I'm looking for is to build an application like the below http://www.insightful.com/products/iminer/demo/3.0/insightful.html?option=&cn=Demo%2BUser&id=I-Miner&pw= But you have to sign up .