ASP.NET Routing for URLRewriting with QueryStrings

In the last post I showed how to use the ASP.NET 3.5 Routing Engine
for URLRewriting purposes. I want to go further in this post by adding
the ability to add variables into a route path and forward and append
query string variables to the destination Web Form request.
A route can contain one or more variables expressed by its {name}.
 
RouteTable.Routes.Add(
new
Route(
"articles/{id}"
,
new
devcoach.Web.RoutingPageHandler()));
.csharpcode, .csharpcode pre
{
font-size: small;
color: black;
font-family: consolas, "Courier New", courier, monospace;
background-color: #ffffff;
/*white-space: pre;*/
}
.csharpcode pre { margin: 0em; }
.csharpcode .rem { color: #008000; }
.csharpcode .kwrd { color: #0000ff; }
.csharpcode .str { color: #006080; }
.csharpcode .op { color: #0000c0; }
.csharpcode .preproc { color: #cc6633; }
.csharpcode .asp { background-color: #ffff00; }
.csharpcode .html { color: #800000; }
.csharpcode .attr { color: #ff0000; }
.csharpcode .alt
{
background-color: #f4f4f4;
width: 100%;
margin: 0em;
}
.csharpcode .lnum { color: #606060; }
Inside of the RoutingHandler we can iterate through the variables by
accessing them by the RouteData property on the parameter passing the
RequestContext:
var queryString = new
StringBuilder("?"
);
foreach
(var aux in
requestContext.RouteData.Values)
{
queryString.Append(
requestContext.HttpContext.Server.UrlEncode(aux.Key));
queryString.Append("="
);
queryString.Append(
requestContext.HttpContext.Server.UrlEncode(
aux.Value.ToString()));
queryString.Append("&"
);
}
queryString.Remove(queryString.Length - 1, 1);
.csharpcode, .csharpcode pre
{
font-size: small;
color: black;
font-family: consolas, "Courier New", courier, monospace;
background-color: #ffffff;
/*white-space: pre;*/
}
.csharpcode pre { margin: 0e