表单值如何通过链接传递

Question

本来某网站是 以参数传递日期的， 然后可以查到某日期的一个页面，我再正则取自己要的东西。如今人家改版了，把日期栏变成了表单传输的， 我该怎么只用超链接过去，顺便能传递这个 日期参数？？

Answer 1

跳转到一个post提交的页面  然后给他post上去。。 

Answer 2

HttpWebRequest wr = (HttpWebRequest)HttpWebRequest.Create("http://www.safe.gov.cn/AppStructured/view/project_syRMBQuery.action");
    try
        {
            using (StreamReader sr = new StreamReader(wr.GetResponse().GetResponseStream(), Encoding.GetEncoding(936)))
            {
                htmlBody = sr.ReadToEnd();
            }
        }
        catch
        {
        }  我的代码， 请指教该如何做，那个link是有效的

Answer 3

参考如下发送带post请求
HttpWebRequest req = (HttpWebRequest)WebRequest.Create(url);
            req.KeepAlive = false;
            req.Method = "POST";
            req.UserAgent = "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.2; .NET CLR 1.1.4322; .NET CLR 2.0.50727)";
            req.Credentials = CredentialCache.DefaultCredentials;
            Encoding encode = new UTF8Encoding();
            using (Stream stream = req.GetRequestStream())
            {
                Dictionary<string, string> nvc = new Dictionary<string, string>();
                nvc.Add("Content", HttpUtility.UrlEncode(content, encode));
                nvc.Add("Type", "1");
                nvc.Add("StartDate", DateTime.Now.AddDays(-1).Date.ToString("yyyy-MM-dd 00:00:00"));
                nvc.Add("EndDate", DateTime.Now.Date.ToString("yyyy-MM-dd 00:00:00"));
                string boundary = "---------------------------" + DateTime.Now.Ticks.ToString("x");
                byte[] boundarybytes = Encoding.ASCII.GetBytes("\r\n--" + boundary + "\r\n");
                req.ContentType = "multipart/form-data; boundary=" + boundary;
                string formdataTemplate = "Content-Disposition: form-data; name=\"{0}\"\r\n\r\n{1}";
                foreach (string key in nvc.Keys)
                {
                    stream.Write(boundarybytes, 0, boundarybytes.Length);
                    string formitem = string.Format(formdataTemplate, key, nvc[key]);
                    byte[] formitembytes = encode.GetBytes(formitem);
                    stream.Write(formitembytes, 0, formitembytes.Length);
                }
                stream.Write(boundarybytes, 0, boundarybytes.Length);
                byte[] trailer = Encoding.ASCII.GetBytes("\r\nContent-Type: application/x-form-www-urlencoded\r\n\r\n\r\n--" + boundary + "--\r\n");
                stream.Write(trailer, 0, trailer.Length);
            }            WebResponse res = req.GetResponse();
            StreamReader sr = new StreamReader(res.GetResponseStream(), encode);
            string result = sr.ReadToEnd();