ASP.NET MVC Beta 1 - where is Html.RenderPartial?

Question

I'm just in the process of upgrading my Preview 5 application to Beta 1, and I'm nearly there save for this one error when trying to render a control:

'System.Web.Mvc.HtmlHelper' does not contain a definition for 'RenderPartial' and no extension method 'RenderPartial' accepting a first argument of type 'System.Web.Mvc.HtmlHelper' could be found (are you missing a using directive or an assembly reference?)

My markup (in the .aspx View Content Page) is:

<% Html.RenderPartial("Controls/UserForm", ViewData); %>

I've tried using Microsoft.Web.Mvc but to no avail. Does anyone know where Html.RenderPartial has gone, or what alternative I could use?

Yeah, I think they get some kind of sick pleasure from it... — tags2k
– tags2k, Commented Oct 17, 2008 at 9:19
Great question - we're upgrading to 1.0 from Preview 5 today and this really helped! — Jarrod Dixon
– Jarrod Dixon, Commented Apr 9, 2009 at 22:06
Well, as annoying as it is, better they get it right during the Beta than have to change it after the RTM. — Andrew Stanton-Nurse
– Andrew Stanton-Nurse, Commented May 26, 2009 at 15:56

spinodal · Accepted Answer · 2008-10-19 19:47:59Z

10

And also don't forget to add namespaces like below to the web config, I think preview 5 default web.config does not have System.Web.Mvc.Html in it:

<namespaces>
 <add namespace="System.Web.Mvc"/>
 <add namespace="System.Web.Mvc.Ajax"/>
 <add namespace="System.Web.Mvc.Html"/>
 <add namespace="System.Web.Routing"/>
 <add namespace="System.Linq"/>
 <add namespace="System.Collections.Generic"/>
</namespaces>

answered Oct 19, 2008 at 19:47

spinodal

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tags2k · Accepted Answer · 2008-10-17 09:16:23Z

9

Now fixed - the conflict was a difference in Web.config requirements between Preview 5 and Beta 1. The following needs to be added into the system.web compilation assemblies node:

<add assembly="System.Web.Mvc, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>

After this change, all of my old HtmlHelper methods magically came back!

answered Oct 17, 2008 at 9:16

tags2k

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Graviton · Accepted Answer · 2009-05-26 14:21:08Z

2

In addition to adding the assembly reference I also had to add the line

 <add namespace="System.Web.Mvc.Html"/>"

to the pages/namespaces section in web.config file.

edited May 26, 2009 at 14:21

Graviton

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answered Oct 17, 2008 at 16:19

aogan

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1 Comment

rjarmstrong Over a year ago

In addition to this you need to ensure the compiler is set to 3.5: stackoverflow.com/questions/944015/…

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