Need help rewriting url

Question

I am using UrlRewriting.UrlRewrite and need a reg ex to change the url from http://www.site.com/p~p-86572910~Nikon-CoolPix-S630-Digital-Camera.aspx to http://www.site.com/Nikon-CoolPix-S630-Digital-Camera.aspx.

Regular Expressions are completely new to me.  Can anyone help me with the code for this? 

Thank you in advance for the help.

Answer 1

You can get away with a single call to Regex.Replace, provided my assumptions about the format of your URLs are correct.

Try:

string rewrittenUrl = Regex.Replace (originalUrl, @"(?<=/)([A-Za-z0-9\-)+~)+", "");

which means:

(?<=/)  = match only if the preceding character is a forward slash...
(...)+    = one or more runs of...
[A-Za-z0-9\-]+~ = a sequence of one or more alphanumeric characters or dashes followed by a tilde (~)

If a match is found, it is replaced with nothing (hence, removed).

In the example above, the string:

p~p-86572910~  satisfies the above conditions.

HTH
--mc

Answer 2

Hi, dthardy:
     If your URL is right, and the "p~p-86572910~" is what you want to remove. I believe you could use the following code. Assuming that the pattern is "X~X-########~", where X stands for any single letter and #stands for any single digit.

public static String ChangeUrl(String url)
{
    Regex rs = new Regex(@"(?<=/)[a-zA-Z]~[a-zA-Z]-\d{8}~");
    string result = rs.Replace(url, "");
    return result;
}

    
     Good luck.

---

Please mark the right answer at right time.
Thanks,
Sam

Answer 3

Why not just use the String.Replace .net function? Regex would be overkill for such a simple task.

Adam

Answer 4

I want to change it not only for the visitor but for spiders also.  Would this work with search engine spiders?