How to read the query string when it contains unencoded data?

Question

I have the below asp.net page which accepts a "url" query string key whose value can be an un-encoded url:

http://localhost:4104/WebSiteForTest/TinyUrl.aspx?url=http://www.google.co.uk/#hl=en&q=life&oq=life&aq=f&aqi=g-s1g9&aql=&gs_sm=3&gs_upl=2803373l2803701l2l2803826l4l4l0l0l0l0l188l453l0.3l3l0&bav=on.2,or.r_gc.r_pw.r_cp.,cf.osb&fp=94681dc4659502d1&biw=1680&bih=883

Now from this page, how would that be possible to read the text after ".aspx?"?

I checked the Request.Url.AbsoluteUri property and it only showed

"http://localhost:4104/WebSiteForTest/TinyUrl.aspx?url=http://www.google.co.uk/"

I also checked with the Request.QueryString with the below code:

 private void getQueryString()
    {
        var sb = new StringBuilder();

        var queryStringCount = Request.QueryString.Keys.Count;

        for (int keyIndex = 0; keyIndex < queryStringCount; keyIndex++)
        {
            sb.Append(Request.QueryString.Keys[keyIndex]).Append("=").Append(Request.QueryString[keyIndex]);
            if (keyIndex != (queryStringCount - 1))
            {
                sb.Append("&");
            }
        }
    }

However, the code after "#" doesn't appear in any query string.

how would that be possible to read the text after ".aspx?"?

if you say it's not possible, how Google uses "#" in their url then when you search for something?!

http://www.google.co.uk/#hl=en&site=&q=life&oq=life&aq=f&aqi=g-s1g9&aql=&gs_sm=3&gs_upl=3317l3630l0l3755l4l4l0l0l0l0l125l391l3.1l4l0&bav=on.2,or.r_gc.r_pw.r_cp.,cf.osb&fp=94681dc4659502d1&biw=1680&bih=849

Thanks,

@Jodrell, it can e.g. http://www.google.co.uk/#hl=en&site=&q=life&oq=life&aq=f&aqi=g-s1g9&aql=&gs_sm=3&gs_upl=3317l3630l0l3755l4l4l0l0l0l0l125l391l3.1l4l0&bav=on.2,or.r_gc.r_pw.r_cp.,cf.osb&fp=94681dc4659502d1&biw=1680&bih=849 — The Light, Feb 16 '12 at 14:07
I still don't see any unencoded data in the query string but I think the answer you are looking for is in the Javascript of the google search page. — Jodrell, Feb 16 '12 at 16:47

score 4 · Answer 1 · edited May 23 '17 at 10:30

4

It's not possible to get value after anchor on server side, you can check this with fiddler or something similar, you should deal with this on client. Browser simply strips all after anchor.

Retrieving Anchor Link In URL for ASP.Net

c# get complete URL with "#"

Update:

I don't know how google exactly do this, but if you look with fiddler after initial request there goes another without #, here is a fidller log for request from your question :

enter image description here

so my advice is look with fiddler how google do this, or maybe ask another question

edited May 23 '17 at 10:30

Community

1
1

answered Feb 16 '12 at 14:05

Antonio Bakula

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if not possible then how comes google uses # in their urls when you search something?! – The Light Feb 16 '12 at 14:31

score 0 · Answer 2 · answered Feb 16 '12 at 13:55

0

Use Request.QueryString

http://localhost:4104/WebSiteForTest/TinyUrl.aspx?url=http://www.google.co.uk/#hl=en&q=life&oq=life&aq=f&aqi=g-s1g9&aql=&gs_sm=3&gs_upl=2803373l2803701l2l2803826l4l4l0l0l0l0l188l453l0.3l3l0&bav=on.2,or.r_gc.r_pw.r_cp.,cf.osb&fp=94681dc4659502d1&biw=1680&bih=883

<%=Request.QueryString("url")%> will get the ?url parameter

answered Feb 16 '12 at 13:55

Sandeep Bansal

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it doesn't. it only gets the part until #. – The Light Feb 16 '12 at 14:09
and this behaviour is by design, browser cuts all after anchor, see my answer – Antonio Bakula Feb 16 '12 at 14:40

score 0 · Answer 3 · answered Feb 16 '12 at 13:58

0

I assume you're using C# to do this. You can easily get the parameters and their values by iterating through the request object. Or in this case, since you know the name of the parameter, simply do this:

String url = Request.QueryString["url"];

More information on iterating through your request parameters can be found here.

answered Feb 16 '12 at 13:58

Kjartan Sverrisson

123
4

Like I said, the text after # does not appear in the Request.QueryString as a key. – The Light Feb 16 '12 at 14:13

Alex · Answer 4 · 2012-02-16T14:20:37.217

0

The Uri Type works as well.

String yourHttpUri ="....";
Uri yourURI = new Uri(yourHttpUri);
yourURI.query // "?url=http://www.google.co.uk/"
yourURI.fragment // "#hl=en&q=life&oq=life&aq=f&aqi=g-s1g9&aql=&gs_sm=3&gs_upl=2803373l2803701l2l2803826l4l4l0l0l0l0l188l453l0.3l3l0&bav=on.2,or.r_gc.r_pw.r_cp.,cf.osb&fp=94681dc4659502d1&biw=1680&bih=883"

Edit:

Have you tried Request.Url.ToString(); (And create a new Uri from the result)

edited Feb 16 '12 at 14:20

answered Feb 16 '12 at 14:02

Alex

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please read the question again. I'd like to get the url and query string from within that page e.g. on page_load. – The Light Feb 16 '12 at 14:09

How to read the query string when it contains unencoded data?

4 Answers4