Question

I’m following the ASP.Net MVC ‘TaskList’ example video and on clicking Run in Visual Studio (~14:00 min into the video) I’m getting the following error message in the browser:

Server Error in '/' Application.  Bad IL format. Description: An unhandled exception occurred during the execution of the  current webrequest. Please review the stack trace for more information  about the error andwhere it originated in the code.  Exception Details: System.BadImageFormatException: Bad IL format.  Source Error:  Line 12:         ' (2) URL with parameters Line 13:         ' (3) Parameter defaults Line 14:         routes.MapRoute( _ Line 15:             'Default', _ Line 16:             '{controller}/{action}/{id}', _   Source File: C:\Users\...\TaskList\TaskList\Global.asax.vb    Line: 14  Stack Trace:  [BadImageFormatException: Bad IL format.]    VB$AnonymousType_0`3..ctor(T0 controller, T1 action, T2 id) +0    TaskList.MvcApplication.RegisterRoutes(RouteCollection routes) in     C:\Users\...\TaskList\TaskList\Global.asax.vb:14    TaskList.MvcApplication.Application_Start() in     C:\Users\...\TaskList\TaskList\Global.asax.vb:23   Version Information:    Microsoft .NET Framework Version:2.0.50727.1434;    ASP.NET Version:2.0.50727.1434  

I’ve double-checked the code I’ve typed in, what am I missing?

Thank you!

Versions:

• ASP.Net MVC Beta (16th October 2008)
• Visual Studion 2008 (9.0.21022.8 RTM)
• Vista Ultimate SP1
• IIS 7.0.6000.16386

Answer 1

D’oh!

Found the problem, it’s in the HomeController.vb:

Public Class HomeController     Inherits System.Web.Mvc.Controller      ' Display a list of tasks     Function Index()         Return View()     End Function      ' Dislpay a form for creating a new task     Function Create() As ActionResult         Return View()     End Function      ' Adding a new task to the database     Function CreateNew(ByVal task As String) As ActionResult         ' add the new task to the database         Return RedirectToAction('Index')     End Function      ' Mark a task as complete     Function Complete()         ' database logic         Return RedirectToAction('Index')     End Function  End Class 

the Function Complete() is missing the return type, it should read:

    ' Mark a task as complete     Function Complete() As ActionResult         ' database logic         Return RedirectToAction('Index')     End Function 

Thanks for the suggestions, I guess I need to tripple-check my code next time!

(though it would be nice if the compiler pointed to my code, rather than the Global.asax.vb, which made me think this was a configuration issue)