以NameValueCollection 修改URL中的查询参数
示例效果:
针对原URL: http://www.cnblogs.com/freeliver54?KeyB=ValueB&KeyD=ValueD&KeyC=ValueC
对查询参数
进行新增 KeyA=ValueA
进行修改 KeyB=ValueB ->KeyB=ValueB2
进行删除 KeyD
得到新的URL: http://www.cnblogs.com/freeliver54?KeyB=ValueU&KeyC=ValueC&KeyA=ValueA
相关代码如下:
private string UpdateQueryString() { string urlOld = "http://www.cnblogs.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[]); queryString.Remove("KeyD");
queryString.Add("KeyA", "ValueA");
queryString["KeyB"] = "ValueB2"; urlNew = separateURL[] + "?" + queryString.ToString();
}
else
{
urlNew = urlOld + "?KeyA=ValueA" ;
} return urlNew;
}