用代碼實現post方式登陸

程序登陸網站並獲取頁面返回信息。

 

private void button2_Click(object sender, EventArgs e)
        {
            string usename = txt_name.Text.ToString().Trim();
            string password = txt_psw.Text.ToString().Trim();
            HttpWebRequest req = (HttpWebRequest)HttpWebRequest.Create("http://127.0.0.1:90/http/loginBackground.aspx");
            WebClient wc = new WebClient();

            string s = "username=" + usename + "&" + "password=" + password;
            byte[] bs = Encoding.UTF8.GetBytes(s);
            req.Method = "POST";
            req.ContentLength = bs.Length;
            req.ContentType = "application/x-www-form-urlencoded";
            req.GetRequestStream().Write(bs, 0, bs.Length);
           
            var resp = (HttpWebResponse)req.GetResponse();
          
            string result = new System.IO.StreamReader(resp.GetResponseStream(), System.Text.Encoding.GetEncoding("gb2312")).ReadToEnd();

             MessageBox.Show(result);
        }