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Editorial Team
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Asked: 2026-05-13T05:59:59+00:00

I am working with an ASP.NET MVC project which was originally started from the

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I am working with an ASP.NET MVC project which was originally started from the CodeBetter.Canvas project – and I’m trying to move to ASP.NET MVC 2. I successfully upgraded my project using Eilon’s upgrade tool, moved to VS2010 (although not yet to .NET 4).

The issue I’m having currently is only occurring when using the spark view engine. Here is the relevant bit of code in my View.spark (strongly typed):

${Html.EditorFor(e => e)}

The same bit of code works just fine if I use an .aspx view:

<%= Html.EditorFor(e => e) %>

The major point here being “EditorFor” is new in ASP.NET MVC 2 and in my project I can use that helper in an ASPX view but not a Spark view.

I’ve tried upgrading Spark to use MVC 2 (as well as MvcContrib and Ninject), thinking maybe it was one of those that was freaking out – but so far no luck – I’m still seeing the same behavior.

Here is the full error message that is thrown from within Spark’s BatchCompiler class.

Dynamic view compilation failed.
(0,0): warning CS1701: Assuming
assembly reference ‘System.Web.Mvc,
Version=1.0.0.0, Culture=neutral,
PublicKeyToken=31bf3856ad364e35’
matches ‘System.Web.Mvc,
Version=2.0.0.0, Culture=neutral,
PublicKeyToken=31bf3856ad364e35’, you
may need to supply runtime policy
c:\inetpub\wwwroot[myproject]\CodeBetter.Canvas.Web\Views[MyEntity]\View.spark(9,16):
error CS1061:
‘System.Web.Mvc.HtmlHelper’ does not
contain a definition for ‘EditorFor’
and no extension method ‘EditorFor’
accepting a first argument of type
‘System.Web.Mvc.HtmlHelper’ could be
found (are you missing a using
directive or an assembly reference?)

Here is the Spark related code in my Global.asax:

var settings = new SparkSettings()
.AddNamespace("System")
.AddNamespace("System.Collections.Generic")
.AddNamespace("System.Web.Mvc")
.AddNamespace("System.Web.Mvc.Html")
.AddNamespace("MvcContrib.FluentHtml")
.AddNamespace("CodeBetter.Canvas")
.AddNamespace("CodeBetter.Canvas.Web")
.SetPageBaseType("ApplicationViewPage")
.SetAutomaticEncoding(true);

#if DEBUG
    settings.SetDebug(true);
#endif

var viewFactory = new SparkViewFactory(settings);
ViewEngines.Engines.Add(viewFactory);

Also, I am referencing System.Web.Mvc.Html in my spark view as mentioned in another SO answer.

<use namespace="System.Web.Mvc.Html" />
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1 Answer

  1. Editorial Team

    The underlying issue is that a version 1.0.0 assembly is still being referenced somewhere in the project.

    Using reflector to examine each assemblies dependencies, I found (if you’re starting with CodeBetter.Canvas project) there are three dependent projects that need to be updated to use the 2.0.0 version of system.web.mvc.dll

    1. Spark. Download the latest version
      of spark from teamcity and use the
      spark.web.mvc2.dll (which references
      system.web.mvc.dll 2.0.0) Link to detailed instructions.

    2. MVCContrib. Download the latest version
      of MVCContrib (download release, download source) which references the
      system.web.mvc.dll 2.0.0.

    3. Ninject. Download the latest version of
      ninject       and recompile the VS solution
      after updating the reference to the 2.0.0
      version of system.web.mvc.dll

    Now, replace these dependency’s assemblies in your project and update the project references if necessary. All should be well.

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