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

My approach is very simple, for beginners :

// --> Prototype : https://ctrader.guru/?id=1#reload

    public static string AddGetParamToUrl(string url, string pname, string pvalue)
    { 

        pvalue = Uri.EscapeDataString(pvalue);

        if (url.IndexOf("?") > -1)
        {

            url = url.Replace("?", string.Format("?{0}={1}&", pname, pvalue));

        }
        else if (url.IndexOf("#") > -1)
        {

            url = url.Replace("#", string.Format("?{0}={1}#", pname, pvalue));

        }
        else
        {

            url = string.Format("{0}?{1}={2}", url, pname, pvalue);

        }

        return url;

    }