如何获取跳转后的地址。
跳转前地址：

http://jump.zhineng.58.com/clk?target=mv7V0A-b5HThmvqfpv--5yOdUAkhuA-1pyEquH9LnWmOnjbVm19zuBYYmh7bsHbOnjnVPyuWuhPhPHbvnAubFMP_ULEqUA-1IAQ-uMEhuA-

1IAYqnHnOnWbdnWmOPj93PBuzuymqpZwY0jCfsvFJsWN3shPfUiqWpZRlIith0vqd0hP-5HDhIh-1Iy-b5HDvP1DYnjm1rHnQrHDQFMuG0LRG0jYQnWn8nHD1sWn3sW0dFhR8IZwk5HTh0A7zmyYqFh-

1ug6YuyOb5yu6UZP-FMK_uWYVniudpyEqnHEYrjcvP19dPWTzPWnhmvQopyEqn1nzmHRWmycVPWNdPaYYuHKBsyDzrH0VmhnOmvcYuymLrjckFMKGujYOFhR8IA-

b5HDvrHT3nW0znH9OPH0vFhR8IZwk5HTh0ZFGmvNqnHbQFMF-uA-

z5y6YIZTlszqBpB3draOWUvYfXMRhmyOMs1DvrHT3nW0znH9OPH0vXaO1pZwVUaubpgPkULnqniu1IyFGujYdnjbQnWb1FhPzuy7YuyEqPHT3P1nknzukmgF6Uy-b5iubpgPWmHY3FMP-

UAuWmHY3FhwG0vQf5HDh0vR_uhQf5HDh0HYQPjbhmyFY5yD

跳转后地址：http://bj.58.com/zufang/16908272189576x.shtml

在地址栏输入跳转前的地址，转向到了http://bj.58.com/zufang/16908272189576x.shtml。


问题：现在要用程序请求跳转前的地址，获取跳转后的地址，打下请帮助。






------解决方案--------------------

string url = @"http://jump.zhineng.58.com/clk?target=mv7V0A-b5HThmvqfpv--5yOdUAkhuA-1pyEquH9LnWmOnjbVm19zuBYYmh7bsHbOnjnVPyuWuhPhPHbvnAubFMP_ULEqUA-1IAQ-uMEhuA-1IAYqnHnOnWbdnWmOPj93PBuzuymqpZwY0jCfsvFJsWN3shPfUiqWpZRlIith0vqd0hP-5HDhIh-1Iy-b5HDvP1DYnjm1rHnQrHDQFMuG0LRG0jYQnWn8nHD1sWn3sW0dFhR8IZwk5HTh0A7zmyYqFh-1ug6YuyOb5yu6UZP-FMK_uWYVniudpyEqnHEYrjcvP19dPWTzPWnhmvQopyEqn1nzmHRWmycVPWNdPaYYuHKBsyDzrH0VmhnOmvcYuymLrjckFMKGujYOFhR8IA-b5HDvrHT3nW0znH9OPH0vFhR8IZwk5HTh0ZFGmvNqnHbQFMF-uA-z5y6YIZTlszqBpB3draOWUvYfXMRhmyOMs1DvrHT3nW0znH9OPH0vXaO1pZwVUaubpgPkULnqniu1IyFGujYdnjbQnWb1FhPzuy7YuyEqPHT3P1nknzukmgF6Uy-b5iubpgPWmHY3FMP-UAuWmHY3FhwG0vQf5HDh0vR_uhQf5HDh0HYQPjbhmyFY5yD";

            HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(url);

            request.UserAgent = "Mozilla/5.0 (Windows; U; Windows NT 5.2; zh-CN; rv:1.8.1.8) Gecko/20071008 Firefox/2.0.0.8";

            request.Accept = "text/xml,application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5";

            request.AllowAutoRedirect = true;

            request.Headers.Add(HttpRequestHeader.AcceptCharset, "gb2312,utf-8;q=0.7,*;q=0.7");

            request.Headers.Add(HttpRequestHeader.AcceptEncoding, "gzip,deflate");

            request.Headers.Add(HttpRequestHeader.Cookie, "id58=05dz8VMG5yk8RCViPEsFAg==; city=wz; 58home=wz; ipcity=wz%7C%u6E29%u5DDE; myfeet_tooltip=end; __utma=253535702.1542940914.1392961328.1392961328.1392961328.1; __utmc=253535702; __utmz=253535702.1392961328.1.1.utmcsr=(direct)
------解决方案--------------------
utmccn=(direct)
------解决方案--------------------
utmcmd=(none)");

            request.Timeout = 30000;

            HttpWebResponse response = (HttpWebResponse)request.GetResponse();

            if (stream != null)

            {

 &nbs