Page.RouteData.Values["parameter"] not working

Question

I created a new Web Forms (ASP.NET 4.5) project and I'm trying to get URL routing to work.

RouteConfig.cs looks like this:

routes.MapPageRoute("surveyhome", "survey/home", "~/Survey.aspx");
routes.MapPageRoute("surveyquestions", "survey/questions/{q}", "~/Survey.aspx");

I have a link that looks like this:

<a href="/survey/questions/1">1</a>

It correctly loads the Survey.aspx page, so I know it's partly working, but this code (in the codebehind of that page) doesn't work:

if (Page.RouteData.Values["q"] != null)
{
    // do something
}

It's always null. Why?

Where are you setting it? You may want to post more of the relevant code. — Brian, Jun 04 '13 at 22:59
Could you tell me if RouteData have any values in this case? — Piotr Czarnecki, Jun 05 '13 at 13:12
Debugging tells me that RouteData has 0 Values. I'm not actively trying to figure out why this is not working on my side, but it still baffles me because theoretically this should work. — notAnonymousAnymore, Jun 06 '13 at 21:08

score 1 · Answer 1 · answered Jun 06 '13 at 09:04

1

I have tested your code, and no problems for me on ASP.NET 4.0.

Try defining default values, like

routes.MapPageRoute("surveyquestions",
    "survey/questions/{q}", "~/Survey.aspx",
    false,
    new RouteValueDictionary 
        { { "q", String.Empty } });

Did that resolve your problem?

answered Jun 06 '13 at 09:04

Ammar Hasan

2,436
16
22

Nope, still null. Baffled by why it works your side but not my side. – notAnonymousAnymore Jun 06 '13 at 21:07
May be you are missing some configuration, have you added the RegisterRoute Method in Global.asax's App_Start? Also check if you are missing anything in web.config – Ammar Hasan Jun 07 '13 at 05:16

score 0 · Answer 2 · answered Jun 07 '13 at 05:56

Ensure that the UrlRoutingHandler and UrlRoutingModule being registered to IIS in your Web.config are the 4.0 version, and not the 3.5 version. This is the only thing that I can think of which would allow routing to work but your parameters to not map.

score 0 · Answer 3 · answered Apr 25 '14 at 19:08

First of all check if it contains the key in your case you can achive this with this line of code

 protected void Page_Load(object sender, EventArgs e)
    {
        if (Page.RouteData.Values.ContainsKey("q"))
        {
            if (Page.RouteData.Values["q"] != null) 
            {
                Context.Response.Write(Page.RouteData.Values["q"]);
            }
        }
    }

Have you cheked that it is the right route .....????

score -1 · Answer 4 · answered Nov 28 '13 at 01:23

-1

I had same problem and I got this resolved by adding following under the configuration section of web.config:

<system.webServer>
    <modules runAllManagedModulesForAllRequests="true" />
</system.webServer>

answered Nov 28 '13 at 01:23

Shahid

27
1

Page.RouteData.Values["parameter"] not working

4 Answers4