Question

my routes:

routes.MapRoute(
    "Tag",
    "tag/{t}/{action}",
    new { controller = "tag", action = "unsolved" }
    );

the link like:

<a href="/tag/@(Uri.EscapeDataString(tagName))/unsolved">@tagName</a>

if the tagName not contain “+”,all work well , else ,like “http://www.test.com/tag/c%2B%2B/unsolved”(%2B come from @(Uri.EscapeDataString(“+”)),i get the error: HTTP error 404.11 – Not Found

who can help me? thanks!

Answer 1

You may try allowing double escaping in the <system.webServer> section of your web.config as I suspect that you are having this problem only in IIS 7 and not in the Visual Studio development server (which by the way you should have mentioned in your question):

<system.webServer>
    <validation validateIntegratedModeConfiguration="false"/>
    <modules runAllManagedModulesForAllRequests="true"/>
    <security>
        <requestFiltering allowDoubleEscaping="true"/>
    </security>
</system.webServer>

Further reading: http://www.hanselman.com/blog/ExperimentsInWackinessAllowingPercentsAnglebracketsAndOtherNaughtyThingsInTheASPNETIISRequestURL.aspx