Parse Query string for URL Re-Write asp.net 4.0

Question

I need to solve a problem with url rewrite using routing feature in asp.net 4.0. when user type url like

www.mysite.com/product.aspx?id=101

then right page shows but suppose if i change the page location and name and when user type url like

www.mysite.com/product.aspx?id=101

then page not found error will occur.

So please tell me how could I solve this situation using asp.net 4.0 routing feature. is it possible ?

I handler routing like and my sample code

 void Application_Start(object sender, EventArgs e)
    {
        // Code that runs on application startup
        RouteTable.Routes.MapPageRoute
              ("Source", "Source/{ID}/{Title}", "~/Source.aspx");
        RouteTable.Routes.MapPageRoute
              ("Source1", "MyData/Source/{ID}/{Title}", "~/MyData/Source.aspx");
    }

The code above is just sample and I this way do the url rewrite. It is very easy. But if I need to solve my above url mapping problem with routing then how could I do so and what kind of code I need to write in Application_Start event.

I want when user type

www.mysite.com/product.aspx?id=101

then it should redirect to

www.mysite.com/prod/Myproduct.aspx?prodid=101

This url. So please guide me how could I do this kind of mapping with the help of asp.net 4.0 routing feature.

Community · Accepted Answer · 2017-05-23 12:04:28Z

2

The only way you can route to a path containing a querystring is to use a custom handler. By default routing passes variables in the RouteData.

So you have 3 options.

1) write a custom route handler to rewrite the path taking RouteData and adding it to the querystring. I wrote some code similar code for this in this question.

2) update MyProduct.aspx to check for product id in the QueryString if not found in prodid and use MapPageRoute (the new page has access the the original querystring).

RouteTable.Routes.MapPageRoute(
                    "product", 
                    "product.aspx",
                    "~/prod/myproduct.aspx");

3) use IIS7 rewrite rules

<rewrite>
    <rules>
        <rule name="product">
            <match url="product.aspx?id=([0-9]+)" />
            <action type="Rewrite" url="prod/myproduct.aspx?prodid={R:1}" />
        </rule>
    </rules>
</rewrite>

edited May 23, 2017 at 12:04

CommunityBot

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answered Sep 8, 2011 at 7:50

TheCodeKing

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3 Comments

Keith Costa Over a year ago

thanks...u gave product.aspx/{*prodid}. why * what is the meaning of *. also tell what other sign we can use.

Keith Costa Over a year ago

i am getting error for *. the error text is "A catch-all parameter can only appear as the last segment of the route URL. Parameter name: routeUrl" please guide me to solve it.

TheCodeKing Over a year ago

sorry I got the option 2 wrong, I was thinking of a different scenario - I've updated. the * makes the last a parameter to match everything after the last segment.

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