How do I use an extension method in an ASP.NET MVC View?

Question

How do I access an extension method in an ASP.Net MVC View? In C# I do

using MyProject.Extensions;

and I remember seeing an XML equivalent to put in a view, but I can't find it anymore.

Varion

Is this 'accessing' or 'referencing'? [not picking nits - a question of transitioning from vb] – Prado

@Prado what's the difference? – Varion

In my mind....referencing is the act of prepping the system for the actual utilization (accessing). We can't use a method of a different class until we've setup the reference. – Prado

Answer 1

In View:

<%@ Import Namespace="MyProject.Extensions" %>

Or in web.config (for all Views):

<pages>
  <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" />

    <add namespace="MyProject.Extensions" />
  </namespaces>
</pages>

Proudlove

I had to close the .aspx file in VS2008 and open the file again before Intellisense picked up the imported namespace. – Sperm

Is it literally "MyProject.Extensions", or is it specific? So would mine be: <add namespace="BusinessLogic.ExtensionModule" />? – Brainbrainard

Answer 2

For pages using Razor / WebPages, you can include a using directive in your .cshtml page.

@using MyBlogEngine;  

Instigation