Append values to query string

Question

I have set of URL\'s similar to the ones below in a list

• http://somesite.com/backup/lol.php?id=1&server=4&location=us
• http://somesite.com/news

Answer 1

You could use the HttpUtility.ParseQueryString method and an UriBuilder which provides a nice way to work with query string parameters without worrying about things like parsing, url encoding, ...:

string longurl = "http://somesite.com/news.php?article=1&lang=en";
var uriBuilder = new UriBuilder(longurl);
var query = HttpUtility.ParseQueryString(uriBuilder.Query);
query["action"] = "login1";
query["attempts"] = "11";
uriBuilder.Query = query.ToString();
longurl = uriBuilder.ToString();
// "http://somesite.com:80/news.php?article=1&lang=en&action=login1&attempts=11"