Question

I’m trying to migrate an MVC2 project to MVC3 – i’ve followed the instructions within the release notes and the app will compile, but the project depends on a few helpers located inside the previous MVCFutures and tosses:

Compiler Error Message: CS1061: ‘System.Web.Mvc.HtmlHelper’ does not contain a definition for ‘SubmitImage’ and no extension method ‘SubmitImage’ accepting a first argument of type ‘System.Web.Mvc.HtmlHelper’ could be found (are you missing a using directive or an assembly reference?)

My solution includes a Lib folder, inside of which is:

MVCFutures\Microsoft.Web.Mvc.dll

Do i have an upgrade option here?

Answer 1

You mentioned that your MVC futures binary is located in a Lib folder. Make sure that:

1. Your project has an assesmbly reference to that library
2. The MvcFutures dll is being copied to the bin folder
3. Your web.config has an assembly reference to MvcFutures

Could you also clarify if the exception you are seeing is when compiling your app in Visual Studio (because you are using MVC futures methods in your controllers or data models) or when you access your application in the browser (because you are using futures in your views).

Btw, an upgraded version of MVC Futures that targets MVC 3 will be released soon.

Update: The source code for MVC 3 Futures is already available on codeplex: http://aspnet.codeplex.com/releases/view/58781 so you can compile it yourself.