I upgrade a MVC 2 project to MVC 3. It is currently a small project and I only have one controller and a few views.
However, when I attempt to create a new view using Razor, I have ran into a number of issues:
1) Even though specifying a strong typed view, and it creates the
@model IEnumerable<AcmeProject.SomeObject>
I still get the error that Validation (XHTML 1.0 Traditional): Element ‘AcmeProject.SomeObject’ is not supported.
2) CS0103: The name ‘ViewBag’ does not exist in the current context
<head>
<title>@ViewBag.Title</title>
</head>
This is a reference to the simple Layout view
3) (no longer an issue) originally, I was getting errors about the @model first line of the Razor view I am having issues with, and I had to add the following to the view/web.config file:
<configSections>
<sectionGroup name="system.web.webPages.razor" type="System.Web.WebPages.Razor.Configuration.RazorWebSectionGroup, System.Web.WebPages.Razor, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35">
<section name="host" type="System.Web.WebPages.Razor.Configuration.HostSection, System.Web.WebPages.Razor, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" />
<section name="pages" type="System.Web.WebPages.Razor.Configuration.RazorPagesSection, System.Web.WebPages.Razor, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" />
</sectionGroup>
</configSections>
<system.web.webPages.razor>
<host factoryType="System.Web.Mvc.MvcWebRazorHostFactory, System.Web.Mvc, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
<pages pageBaseType="System.Web.Mvc.WebViewPage">
<namespaces>
<add namespace="System.Web.Mvc" />
<add namespace="System.Web.Mvc.Ajax" />
<add namespace="System.Web.Mvc.Html" />
<add namespace="System.Web.Routing" />
</namespaces>
</pages>
</system.web.webPages.razor>
I am not sure how to resolve #1 and #2 and have been unsuccessful in trying a few solutions I came across in my search. However, I am also concerned I am going to continue having problems because it is an upgrade. As with computers, upgrading is the devil’s playground. Do I just need to create a new project and migrate my files over to it?
Make sure you have followed the steps outlined in the release notes about upgrading an ASP.NET MVC 2 project to ASP.NET MVC 3. There’s also an ASP.NET MVC 3 upgrade tool you may try.