Question

I have just started to learn asp.net MVC3 and i run into this problem:

I’m using visual studio 2010, and there were no Errors during build, only when i try to run application.
I’m searching for an answer on Google but with no success.
Does anybody knows how to fix this?

Thanks!

EDIT-ContextModule code:

using System;
using System.Web;

namespace testbaza.Models
{
    public class ContextModule : IHttpModule
    {

        internal const string CONTEXT_KEY = "datacontext";

        public void Dispose()
        {

        }

        public void Init(HttpApplication context)
        {
            context.PostRequestHandlerExecute += new EventHandler(context_PostRequestHandlerExecute);
            context.PreRequestHandlerExecute += new EventHandler(context_PreRequestHandlerExecute);
        }

        private void context_PreRequestHandlerExecute(object sender, EventArgs e)
        {
            if (HttpContext.Current.Session != null)
            {
                HttpContext.Current.Session[CONTEXT_KEY] = new EntitiesModel();
            }
        }

        private void context_PostRequestHandlerExecute(object sender, EventArgs e)
        {
            CommitTransactions();

            DisposeContext();

            ClearSession();

        }

        private void CommitTransactions()
        {
            if (HttpContext.Current.Session == null)
            {
                return;
            }

            EntitiesModel dbContext =
                HttpContext.Current.Session[CONTEXT_KEY] as EntitiesModel;
            if (dbContext != null)
            {

                dbContext.SaveChanges();
            }
        }

        private void DisposeContext()
        {
            if (HttpContext.Current.Session == null)
            {
                return;
            }

            EntitiesModel dbContext =
                HttpContext.Current.Session[CONTEXT_KEY] as EntitiesModel;
            if (dbContext != null)
            {

                dbContext.Dispose();
            }
        }

        private void ClearSession()
        {

            if (HttpContext.Current.Session == null)
            {
                HttpContext.Current.Session.Remove(CONTEXT_KEY);
            }
        }
    }
}

Answer 1

It seems like you have attached a HTTP module that cannot be found. How have you created the project?
The module can be removed in web.config.

EDIT
You need to change:

<httpModules>
  <add name="ContextModule" type="testbaza.ContextModule, testbaza" />
</httpModules>

to

<httpModules>
  <add name="ContextModule" type="testbaza.Models.ContextModule, testbaza" />
</httpModules>

Notice the changed namespace.