以NameValueCollection 修改URL中的查詢參數(shù)

以NameValueCollection 修改URL中的查詢參數(shù)

本文參考于：http://www.c-sharpcorner.com/Blogs/9421/add-remove-or-modify-the-query-string-value-in-url-in-asp-n.aspx

示例效果：

針對(duì)原URL： http://www.survivalescaperooms.com/freeliver54?KeyB=ValueB&KeyD=ValueD&KeyC=ValueC

對(duì)查詢參數(shù)

進(jìn)行新增 KeyA=ValueA

進(jìn)行修改 KeyB=ValueB ->KeyB=ValueB2

進(jìn)行刪除 KeyD

得到新的URL： http://www.survivalescaperooms.com/freeliver54?KeyB=ValueU&KeyC=ValueC&KeyA=ValueA

相關(guān)代碼如下：

PRivate string UpdateQueryString() {    string urlOld = "http://www.survivalescaperooms.com/freeliver54?KeyB=ValueB&KeyD=ValueD&KeyC=ValueC";            //System.Web.HttpUtility.UrlDecode(returnUrl, Encoding.Unicode);    string urlNew = "";    if (urlOld.Contains("?"))    {        string[] separateURL = urlOld.Split('?');        System.Collections.Specialized.NameValueCollection queryString = System.Web.HttpUtility.ParseQueryString(separateURL[1]);        queryString.Remove("KeyD");        queryString.Add("KeyA", "ValueA");        queryString["KeyB"] = "ValueB2";        urlNew = separateURL[0] + "?" + queryString.ToString();    }    else    {        urlNew = urlOld + "?KeyA=ValueA" ;    }    return urlNew;}