C#.net模拟提交表单POST

方法一、

System.Net.WebClient WebClientObj = new System.Net.WebClient();

System.Collections.Specialized.NameValueCollection PostVars = new System.Collections.Specialized.NameValueCollection();

PostVars.Add("A1","0");

PostVars.Add("A2","0");

PostVars.Add("A3","000");
try

{

byte[] byRemoteInfo = WebClientObj.UploadValues("http://www.lovezhao.com/vote.asp","POST",PostVars);

//下面都没用啦，就上面一句话就可以了

string sRemoteInfo = System.Text.Encoding.Default.GetString(byRemoteInfo);

//这是获取返回信息

richTextBox_instr.Text += sRemoteInfo;

}

catch

{}

方法二、

string url = "网址";

HttpWebRequest req = (HttpWebRequest)WebRequest.Create(url);

string s = "要提交的数据";

byte[] requestBytes = System.Text.Encoding.ASCII.GetBytes (LoginInfo);

req.Method = "POST";

req.ContentType = "application/x-www-form-urlencoded";

req.ContentLength = requestBytes.Length;

Stream requestStream = req.GetRequestStream();

requestStream.Write(requestBytes,0,requestBytes.Length);

requestStream.Close();

HttpWebResponse res = (HttpWebResponse)req.GetResponse();

StreamReader sr = new StreamReader(res.GetResponseStream(), System.Text.Encoding.Default);

string backstr = sr.ReadToEnd(); Response.Write(line); sr.Close(); res.Close();