Url Encoding with Multiple Query String Parameters

Question

In my c# code I am encoding my Url that has multiple query strings. When at the receiver end I try to read back the query strings I get the null values (query string parameter is not found) reason being encoding changes &querystringparameter to &querystringparam. How to get around this.

Response.Redirect(HttpUtility.HtmlEncode("Add.aspx?ID=" + 1 + "&cid="+ 8 + "&jid=" +9));

On the add.aspx page i get the url as "add.aspx?id=1&sid=3&jid=9"

Can you give an explicit example of your URL before and after encoding and how you're encoding - you seem to explain that encoding is cutting off query string parameter names but it's hard to tell why with the information given. — Grant Thomas
– Grant Thomas, Commented Oct 5, 2012 at 11:37
Based on your update there are plenty of issues here. First one to tackle is escaping certain characters, specifically the double quotes here since they're messing with your string and not concatenating as you expect. — Grant Thomas
– Grant Thomas, Commented Oct 5, 2012 at 12:34

Lajos Arpad · Accepted Answer · 2012-10-05 14:43:52Z

5

Use HttpUtility.UrlEncode, I bet it will work like a charm. Read this article for more information.

edited Oct 5, 2012 at 14:43

answered Oct 5, 2012 at 13:47

Lajos Arpad

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2 Comments

V.B Over a year ago

you mean where I read the query string or instead of HttpUtility.HtmlEncode?

Lajos Arpad Over a year ago

I have edited my answer, check out the link, it should be helpful.

Ian Jacobs · Accepted Answer · 2012-10-05 13:06:20Z

3

The biggest issue is that you're encoding the whole query string. You need to encode the individual components, then concatenate them together.

answered Oct 5, 2012 at 13:06

Ian Jacobs

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