Inability to access data on SQLExpress Server from webform

Hi I’m new here and have a problem that I need help on. I have been building a web application based on the book "BUILD YOUR OWN ASP.NET 4 WEBSITE using c# and VB, by Cristian Darie and co. I can’t seem to be able to populate my webform with data from my SQLExpress_2012 server as seen on 458 of the book. Can any one help me find out what I’m doing wrong?

Please if you need the code email me so i can send it you.