Using ASP.NET routing to serve static files

Why not use IIS to do this? You could just create redirect rule to point any requests from the first route to the second one before the request even gets to your application. Because of this, it would be a quicker method for redirecting requests.

Assuming you have IIS7+, you do something like...

<rule name="Redirect Static Images" stopProcessing="true">  <match url="^static/?(.*)$" />  <action type="Redirect" url="/a/b/c/{R:1}" redirectType="Permanent" /></rule>

Or, if you don't need to redirect, as suggested by @ni5ni6:

<rule name="Rewrite Static Images" stopProcessing="true">  <match url="^static/?(.*)$" />  <action type="Rewrite" url="/a/b/c/{R:1}" /></rule>

Edit 2015-06-17 for @RyanDawkins:

And if you're wondering where the rewrite rule goes, here is a map of its location in the web.config file.

<?xml version="1.0" encoding="utf-8" ?><configuration>  <system.webServer>    <rewrite>      <rules>        <!-- rules go below -->        <rule name="Redirect Static Images" stopProcessing="true">          <match url="^static/?(.*)$" />          <action type="Redirect" url="/a/b/c/{R:1}" redirectType="Permanent" />        </rule>      </rules>    </rewrite>  </system.webServer></configuration>

After digging through this problem for a few hours, I found that simply adding ignore rules will get your static files served.

In RegisterRoutes(RouteCollection routes), add the following ignore rules:

routes.IgnoreRoute("{file}.js");routes.IgnoreRoute("{file}.html");

I've had a similar problem. I ended up using HttpContext.RewritePath:

public class MyApplication : HttpApplication{    private readonly Regex r = new Regex("^/static/(.*)$", RegexOptions.IgnoreCase);    public override void Init()    {        BeginRequest += OnBeginRequest;    }    protected void OnBeginRequest(object sender, EventArgs e)    {        var match = r.Match(Request.Url.AbsolutePath);        if (match.Success)        {            var fileName = match.Groups[1].Value;            Context.RewritePath(string.Format("/a/b/c/{0}", fileName));        }    }}