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Seb Nilsson

ASP.NET MVC SEO-Framework

For any serious web-application you should always implement a solid Search engine optimization-strategy, but there is no standardized way to handle this in ASP.NET MVC, out of the box.

You could easily use the ViewBag-object to send dynamic values from Controller-Actions into Views, like this, for example:

public ActionResult Index()
{
    this.ViewBag.PageTitle = "This is the page title";

    return this.View();
}

Then you'd have to make sure you correctly spell or copy-paste ViewBag.PageTitle correctly into your View:

<head>
    <title>@ViewBag.PageTitle</title>
    <!-- More head-values -->
</head>

One problem is that if you refactor the naming for ViewBag.PageTitle into, for example ViewBag.Title, this will break the functionality, potentially website-wide, because you won't get any tooling-help from Visual Studio for that rename.

This is why I created a framework for ASP.NET MVC SEO, to get structured and reusable functionality around the SEO-data for a web-application. The framework is available on Nuget, with the source-code on GitHub.

Setting SEO-values

You can set SEO-values using the properties on a SeoHelper-object in Controller-Actions and Views, or you can use ActionFilter-attributes in Controllers, to set SEO-related data like:

  • Meta-Description
  • Meta-Keywords
  • Title, split on page-title and base-title (website-title)
  • Canonical Link
  • Meta No-index for robots

This can be done inside Controllers and Controller-Actions:

[SeoBaseTitle("Website name")]
public class InfoController : SeoController
{
    [SeoTitle("Listing items")]
    [SeoMetaDescription("List of the company's product-items")]
    public ActionResult List()
    {
        var list = this.GetList();

        if (list.Any())
        {
            this.Seo.Title += $" (Total: {list.Count})";
            this.Seo.LinkCanonical = "~/pages/list.html";
        }
        else
        {
            this.Seo.MetaRobotsNoIndex = true;
        }

        return this.View(model);
    }
}

If you don't want to inherit from SeoController to get access to the this.Seo-property, you can use the extension-method GetSeoHelper:

public class InfoController : Controller
{
    public ActionResult List()
    {
        var seo = this.GetSeoHelper();

        seo.Title = "Page title";

        return this.View(model);
    }
}

You can even set SEO-values inside Views:

@{
    this.Layout = null;
    this.Seo.MetaRobotsNoIndex = true; // Always block Robots from indexing this View
}

Rendering SEO-values

These SEO-values can easily be accessed and rendered as HTML-tags inside Views through provided HtmlHelper-extensions:

<head>
    @Html.SeoTitle()

    @Html.SeoLinkCanonical()
    @Html.SeoMetaDescription()
    @Html.SeoMetaKeywords()
    @Html.SeoMetaRobotsIndex()
</head>

See the README-file on GitHub for the latest detailed information about this ASP.NET MVC SEO-framework. Or try it out through Nuget by running Install-Package AspNetSeo.Mvc in your project. You can even follow the absolutely latest build on MyGet.

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