Lower case URLs in ASP.NET MVC

Question

Is it possible to force/extend the routing engine to generate URLs in lower case, giving /controller/action instead of /Controller/Action?

Answer 1

What's more, you should force any incoming requests that are uppercase to be redirected to the lowercase version. Search engines treat URLs case-sensitively, meaning that if you have multiple links to the same content, that content's page ranking is distributed and hence diluted.

Returning HTTP 301 (Moved Permanently) for such links will cause search engines to 'merge' these links and hence only hold one reference to your content.

Add something like this to your Global.asax.cs file:

protected void Application_BeginRequest(object sender, EventArgs e)
{
    // Don't rewrite requests for content (.png, .css) or scripts (.js)
    if (Request.Url.AbsolutePath.Contains("/Content/") ||
        Request.Url.AbsolutePath.Contains("/Scripts/"))
        return;

    // If uppercase chars exist, redirect to a lowercase version
    var url = Request.Url.ToString();
    if (Regex.IsMatch(url, @"[A-Z]"))
    {
        Response.Clear();
        Response.Status = "301 Moved Permanently";
        Response.StatusCode = (int)HttpStatusCode.MovedPermanently;
        Response.AddHeader("Location", url.ToLower());
        Response.End();
    }
}

Answer 2

Yes, just change it in the routing in the global.asax file.

@All asking if it matters: Yes I do think it matters. Having the url all in lower case just looks better.

Every time you don't make something look nice when you can, Bill Buxton kills a kitten.