处理URL

Question

    int page = 13;
        string url = Request.Url.ToString();
        // url 可能是http://localhost:86/default.aspx?p=1
        // url 可能是http://localhost:86/default.aspx
        // url 可能是http://localhost:86/default.aspx?p=1&k=hello
        // url 可能是http://localhost:86/default.aspx?k=hello&p=1&t=1
        //我想把page插入到URL 的 参数 p=后面。
        string urlNew = "";
        if (Request.QueryString["p"] != null)
            urlNew = url;        else
            urlNew = url;
            Response.Write(string.Format("下一页是<br />{0}<br /><br />", urlNew.ToString()));

Answer 1

你就直接判断下URL有没有带参数，然后直接将Page加在后面就好了

Answer 2

            int page = 13;
            string url = "http://localhost:86/default.aspx";
            Uri uri = new Uri(url);
            NameValueCollection nvc = HttpUtility.ParseQueryString(new Uri(url).Query);
            string query = "?";
            string newUrl = "";
            if (nvc.Keys.Count == 0)
                newUrl = url + "?p=" + page;
            else
            {
                nvc["p"] = page.ToString();
                foreach (string s in nvc.Keys)
                {
                    query += s + "=" + nvc[s] + "&";
                }
                newUrl = url.Replace(uri.Query, query.TrimEnd('&'));
            }
            Console.WriteLine(newUrl);