Cannot access Linq when using Razor without MVC

Question

Has anyone had experience with Razor without MVC. I am using a Template engine build up from http://www.fidelitydesign.net/?p=208 but I cannot use any of the linq queries within the Razor code for example

<div>
    @Model.Person.First().Firstname
</div>

This throws the error:

System.Collections.Generic.List' does not contain a definition for 'First' and no extension method 'First' accepting a first argument of type 'System.Collections.Generic.List' could be found (are you missing a using directive or an assembly reference

For this example Model contains a List of Person below

public class Person
{
    public string FirstName { get; set; }
}

Yes, I have debugged and checked that the assembley was added — scully
– scully, Commented Mar 13, 2012 at 13:13
the syntax is wrong, Model is the list, so First needs to be called on Model. — ntziolis
– ntziolis, Commented Mar 13, 2012 at 13:13
@BrokenGlass: As a side note to your addition: If you use Linq in more of your views than it is easier to put it in the Web.Config file under <system.web><compilation><assemblies><add assembly="System.Data.Linq, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"/> Don't forget to restart Visual Studio :) — Silvermind
– Silvermind, Commented Mar 13, 2012 at 13:25

ntziolis · Accepted Answer · 2012-03-13 13:20:37Z

1

The Model is the list, so you need to First on the model not Person, First returns an instance of the Person class:

<div>
    @Model.First().Firstname
</div>

You need to :

add @using System.Data.Linq at the top of your view
or if you need it on all views add <add namespace="System.Data.Linq" /> to the web.config in your Views folder.

Here is how you do it:

<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" />
            <add namespace="System.Data.Linq" />
        </namespaces>
    </pages>
</system.web.webPages.razor>

edited Mar 13, 2012 at 13:20

answered Mar 13, 2012 at 13:10

ntziolis

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6 Comments

scully Over a year ago

I have updated the question to say that 'Model' contains a List of 'Person'. There is a far deeper issue than this. Thanks though.

Silvermind Over a year ago

Don't forget to restart Visual Studio for Intellisense support on Linq.

scully Over a year ago

There is no Views folder, this is a "Class library" project and the html markup comes from the DB, please check the link for an example project

ntziolis Over a year ago

So put the section I provided into the app.config of the application that is actually running this code OR put it on top of the view

scully Over a year ago

I should have mentioned that I did try this before my last comment with no luck.

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