Upgrading Sitefinity v. 7.1 to be compliant with MVC 4 proje

I am trying to add MVC 4 features to my Sitefinity Web App (v. 7.1).

In order to do that, I have had to do the following:

1) Add references to EntityFramework

2) Add references to System.Web.Optimization via NuGet

3) Upgrade project to .NET v. 4.5

4) Upgrade the Web.config and add appSettings elements such as UnobtrusiveValidation

I then used Sitefinity Thunder to add an MVC Widget to the project.  I was able to compile my solution but as soon as I attempted to run the Sitefinity Administrative backend, everything was broken.  I could not access any of the Pages to create a new Content Page in order to add my MVC Widget.

I regularly develop with ASP.NET MVC in standalone projects so I am not sure how to deploy all of the code that I normally develop into a standard MVC 4 or MVC 5 Sitefinity Widget.

Please advise. 

Hi Samir,

You can find more information about using of MVC in Sitefinity is available in that article:

Using ASP.NET MVC in Sitefinity

Regards,
Svetoslav Manchev
Telerik