Could not load the assembly 'Version=1.0.0.0,Culture=neutral,PublicKeyToken=24e9d7d011937483'. Make sure that it is compiled before accessing the page

Question

A bit of a back story - I am trying to create a custom dispform page for my list in VS2010. I used instructions found here to do it. I successfully created the custom form and had the site loading it instead of the default, but am now getting stuck while adding a code behind page. I am 99% sure the issue is with my namespace and inheritance on the asp page, but I can't for the life of me figure out the issue. I was hoping someone out her can. Here's my code:

<%@ Page language="C#" CodeBehind="DispRequest.aspx.cs" MasterPageFile="~masterurl/default.master" Inherits="Solvera.SellIT.DispRequest.Solvera.SellIT,Version=1.0.0.0,Culture=neutral,PublicKeyToken=24e9d7d011937483"  %>
<%@ Register Tagprefix="SharePoint" Namespace="Microsoft.SharePoint.WebControls" Assembly="Microsoft.SharePoint, Version=14.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c" %>
<%@ Register Tagprefix="Utilities" Namespace="Microsoft.SharePoint.Utilities" Assembly="Microsoft.SharePoint, Version=14.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c" %>
<%@ Import Namespace="Microsoft.SharePoint" %>
<%@ Assembly Name="$SharePoint.Project.AssemblyFullName$" %>
<%@ Assembly Name="Microsoft.Web.CommandUI, Version=14.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c" %>
<%@ Register Tagprefix="WebPartPages" Namespace="Microsoft.SharePoint.WebPartPages" Assembly="Microsoft.SharePoint, Version=14.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c" %>

And from the code behind file which is named disprequest.aspx.cs:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Web.UI.WebControls;
using Microsoft.SharePoint.WebPartPages;


namespace Solvera.SellIT
{
class DispRequest:WebPartPage
{
    protected Button btnSubmitOffer;
    protected TextBox txtOfferAmount;

I would greatly appreciate any help anyone can provide.

Thank you,

Answer 1

You have Inherits="Solvera.SellIT.DispRequest.Solvera.SellIT,Version=1.0.0.0,...

What you probably want is Inherits="Solvera.SellIT.DispRequest, Solvera.SellIT,Version=1.0.0.0,...

Where Solvera.SellIT.DispRequest is the fully qualified name of your class, and Solvera.SellIT is the name of the assembly.

You might also need spaces after each comma in the Inherits string, not sure if it matters but that's how mine look.