Hi Greg.

Adding @using System.Web.Mvc.Html at the top of your view should solve this.

@inherits Umbraco.Web.Mvc.UmbracoTemplatePage<ContentModels.BranchLocationPage>
@using ContentModels = Umbraco.Web.PublishedContentModels;
@{
    Layout = "~/Views/Shared/_Layout.cshtml";
    var landingName = CurrentPage.AncestorOrSelf(2).Name;
}

<aside class="top-image">
    <img src="@Umbraco.Media(Umbraco.Field("headerImage", recursive: true).ToString()).Url">
    <h1 class="landing-name">@landingName</h1>
</aside>

<div class="content">
    <div class="two-column">
        <div class="column1 navigation">
            @{Html.RenderPartial("SideNavigation");}
        </div>
        <div class="column2">
            @{Html.RenderPartial("Breadcrumbs");}            
            <h1>@(Model.Content.ContentTitle != "" ? Model.Content.ContentTitle : Model.Content.Name)</h1>
            @{Html.RenderPartial("SocialLinks");}
            @Model.Content.Main
        </div>
    </div>
</div>

Here's a view which gets these errors:

Error   8   'System.Web.Mvc.HtmlHelper<Umbraco.Web.Models.RenderModel<Umbraco.Web.PublishedContentModels.BranchLocationPage>>' does not contain a definition for 'RenderPartial' and no extension method 'RenderPartial' accepting a first argument of type 'System.Web.Mvc.HtmlHelper<Umbraco.Web.Models.RenderModel<Umbraco.Web.PublishedContentModels.BranchLocationPage>>' could be found (are you missing a using directive or an assembly reference?)
Error   9   'System.Web.Mvc.HtmlHelper<Umbraco.Web.Models.RenderModel<Umbraco.Web.PublishedContentModels.BranchLocationPage>>' does not contain a definition for 'RenderPartial' and no extension method 'RenderPartial' accepting a first argument of type 'System.Web.Mvc.HtmlHelper<Umbraco.Web.Models.RenderModel<Umbraco.Web.PublishedContentModels.BranchLocationPage>>' could be found (are you missing a using directive or an assembly reference?)
Error   10  'System.Web.Mvc.HtmlHelper<Umbraco.Web.Models.RenderModel<Umbraco.Web.PublishedContentModels.BranchLocationPage>>' does not contain a definition for 'RenderPartial' and no extension method 'RenderPartial' accepting a first argument of type 'System.Web.Mvc.HtmlHelper<Umbraco.Web.Models.RenderModel<Umbraco.Web.PublishedContentModels.BranchLocationPage>>' could be found (are you missing a using directive or an assembly reference?)

Keep in mind I forgot to mention this in the first post. The page still renders fine. I simply get these errors in Visual Studio.

Did you try adding @using System.Web.Mvc.Html?

... well that's embarrasing.

However, shouldn't that be a default? I can't recall any other MVC project where I had to specify this in every view.

EDIT: To clarify, I looked into the web.config in the views folder and this was intended present:

<system.web.webPages.razor>
  <host factoryType="System.Web.Mvc.MvcWebRazorHostFactory, System.Web.Mvc, Version=4.0.0.0, 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" />
      <add namespace="Umbraco.Web" />
      <add namespace="Umbraco.Core" />
      <add namespace="Umbraco.Core.Models" />
      <add namespace="Umbraco.Web.Mvc" />
      <add namespace="umbraco" />
      <add namespace="Examine" />
      <add namespace="Umbraco.Web.PublishedContentModels" />
    </namespaces>
  </pages>
</system.web.webPages.razor>

:) Yes, it should be a default, something must have gone missing during your installation. So if you dont want to add this using statement in every view, do this:

Check your views Web.config (NOTE: the web.config in your Views folder, not the root web.config.). This file holds the defaults for every view in your solution. Check the element system.web.webPages.razor and namespaces, does it have a reference to System.Web.Mvc? It should, otherwise add it. Here are the namespaces from a clean install:

<system.web.webPages.razor>
    <host factoryType="System.Web.Mvc.MvcWebRazorHostFactory, System.Web.Mvc, Version=5.2.3.0, 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" />
        <add namespace="Umbraco.Web" />
        <add namespace="Umbraco.Core" />
        <add namespace="Umbraco.Core.Models" />
        <add namespace="Umbraco.Web.Mvc" />
        <add namespace="umbraco" />
        <add namespace="Examine" />

With this configuration, you dont have to add the using statement in every view.

Let me know if it works out for you!!

Best of luck!!

Yes, Umbraco now runs on MVC5, so if you installed it on top of a MVC4 application, i can guess it would be a problem. Try to just change your views web.config to reference MVC5 instead.

When installing Umbraco, i usally just create a Empty ASP.NET Web Application, and then install Umbraco with nuget. Umbraco ships with everything it needs in terms om MVC and what not.

Best of luck!

Sounds like a great idea Greg!

Good luck with the rest of your site!! :)

Have a great day!!!

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