.net change some characters of url before rewriting - asp.net-mvc

Question

I'm working at mvc.net web application and I'm using urlrewritingNet for route urls.
I want to change some characters of url before urlrewriting reach url.
ex:
user request this url /Prods/1/Medi_lice.aspx
I want this url to be /Prods/1/Medi-lice before rewriting process.
Thanks
Edit
My question is: I want to change last segment of my url. I want the underscore to be dash
I write HttpModule to work around:
public class PageNameProcessingModule : IHttpModule
{
public void Dispose()
{
}
public void Init(HttpApplication context)
{
context.LogRequest += new EventHandler(App_Handler);
context.PostLogRequest += new EventHandler(App_Handler);
}
public void App_Handler(object sender, EventArgs e)
{
HttpApplication app = (HttpApplication)sender;
HttpContext context = app.Context;
if (context.CurrentNotification == RequestNotification.LogRequest)
{
if (!context.IsPostNotification)
{
var url = context.Request.Url.AbsolutePath;
var segments = context.Request.Url.Segments;
var lastSeg = segments[segments.Length - 1];
segments[segments.Length - 1] = lastSeg.Replace("_", "-");
// here I want an approach to set new url
// or pass the new url to the UrlRewriting
// this is urlrewriting namespace UrlRewritingNet.Configuration
}
else
{
}
}
}
}

Answer 1

Try context.RewritePath method

Answer 2

I found the solution for my question after I read urlrewriting pdf
I did the following:
Write a custom provider
Write custom rewrite rule.
Update configs at web.config
Here is the custom provider:
public class CustomReWriteProvider : UrlRewritingNet.Configuration.Provider.UrlRewritingProvider
{
public override UrlRewritingNet.Web.RewriteRule CreateRewriteRule()
{
return new CustomRegexReWriteRule();
}
}
And here is the custom rewrite rule:
public class CustomRegexReWriteRule : UrlRewritingNet.Web.RewriteRule
{
public override void Initialize(UrlRewritingNet.Configuration.RewriteSettings rewriteSettings)
{
base.Initialize(rewriteSettings);
this.RegexOptions = rewriteSettings.GetEnumAttribute<RegexOptions>("regexOptions", RegexOptions.None);
this.VirtualUrl = rewriteSettings.GetAttribute("virtualUrl", "");
this.destinationUrl = rewriteSettings.GetAttribute("destinationUrl", "");
}
public override bool IsRewrite(string requestUrl)
{
return this.regex.IsMatch(requestUrl);
}
public override string RewriteUrl(string url)
{
string newUrl = url;
if (url.ToLower().EndsWith(".aspx"))
{
Uri uri = new Uri("http://example.com" + url);
var segments = uri.Segments;
var lastSeg = segments[segments.Length - 1];
var name = lastSeg.Remove(lastSeg.Length - 5);
if (!name.IsNumbersOnly())
{
segments[segments.Length - 1] = lastSeg.Replace("_", "-");
newUrl = string.Join("", segments) + uri.Query;
}
}
return this.regex.Replace(newUrl, destinationUrl, 1);
}
private Regex regex;
private void CreateRegEx()
{
UrlHelper urlHelper = new UrlHelper();
if (IgnoreCase)
{
this.regex = new Regex(urlHelper.HandleRootOperator(virtualUrl), RegexOptions.IgnoreCase | RegexOptions.Compiled | regexOptions);
}
else
{
this.regex = new Regex(urlHelper.HandleRootOperator(virtualUrl), RegexOptions.Compiled | regexOptions);
}
}
private string virtualUrl = string.Empty;
public string VirtualUrl
{
get { return virtualUrl; }
set
{
virtualUrl = value;
CreateRegEx();
}
}
private string destinationUrl = string.Empty;
public string DestinationUrl
{
get { return destinationUrl; }
set { destinationUrl = value; }
}
private RegexOptions regexOptions = RegexOptions.None;
public RegexOptions RegexOptions
{
get { return regexOptions; }
set
{
regexOptions = value;
CreateRegEx();
}
}
}
And at the configs:
<urlrewritingnet rewriteOnlyVirtualUrls="true" contextItemsPrefix="QueryString" defaultProvider="CutsomProvider" xmlns="http://www.urlrewriting.net/schemas/config/2006/07" >
<providers>
<add name="CutsomProvider" type="MyNamespace.CustomReWriteProvider" />
</providers>
</urlrewritingnet>
And It worked for me.