http post get

gistfile1.cs

    /// <summary>
    /// 取得必要的post參數
    /// </summary>
    /// <returns></returns>
    public static string getEVENTVALIDATION()
    {
        string output = htmls;

        //抓取值
        output = GetInner(output, "__EVENTVALIDATION", "<table width=\"939\" border=\"0\" align=\"center\" cellpadding=\"0\" cellspacing=\"0\" bgcolor=\"fff299\">");
        output = GetInner(output, "value=\"", "\" />");
        output = output.Replace("value=\"", "");

        return output;
    }

    /// <summary>
    /// 取得必要的post參數
    /// </summary>
    /// <returns></returns>
    public static string getVIEWSTATE()
    {
        string output = htmls;

        //抓取值
        output = GetInner(output, "__VIEWSTATE", "__VIEWSTATEENCRYPTED");
        output = GetInner(output, "value=\"", "\" />");
        output = output.Replace("value=\"", "");

        return output;
    }


    /// <summary>
    /// 取得中間值
    /// </summary>
    /// <param name="htmls">內文</param>
    /// <param name="ff">頭</param>
    /// <param name="ll">尾</param>
    /// <returns></returns>
    public static string GetInner(string htmls, string ff, string ll)
    {
        int first = htmls.IndexOf(ff); //關鍵字1
        int last = htmls.LastIndexOf(ll); //關鍵字2
        try
        {
            string output = htmls.Substring(first, last - first);
            return output;
        }
        catch (Exception e)
        {
            return e.ToString();
        }

    }



    //接收網頁數據
    private static string httpGet(string URI)
    {
        HttpWebRequest req = (HttpWebRequest)WebRequest.Create(URI);
        //req.Proxy = new WebProxy(ProxyString, true); //true means no proxy
        WebResponse resp = req.GetResponse();
        StreamReader sr = new StreamReader(resp.GetResponseStream(), Encoding.GetEncoding("UTF-8"));
        string sReturn = sr.ReadToEnd().Trim();
        resp.Close(); sr.Close();
        return sReturn;
    }

    //向網頁提交數據並接收返回信息：
    private static string httpPost(string URI, string Parameters)
    {
        byte[] bytes = Encoding.Default.GetBytes(Parameters);

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

        req.CookieContainer = new CookieContainer();

        //  req.Proxy = new WebProxy(ProxyString, true);
        //req.UserAgent = "Mozilla/5.0 (Windows; U; Windows NT 5.1; zh-TW; rv:1.9) Gecko/2008052906 Firefox/3.0";
        //req.Accept = "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8";

        req.UserAgent = "Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.8) Gecko/20051111 Firefox/1.5";
        req.Accept = "text/xml,application/xml,application/xhtml+xml,text/html";
        req.Timeout = 10000;
        req.KeepAlive = true;
        req.Referer = URI; //修改為自己的referer
        req.ContentType = "application/x-www-form-urlencoded";
        req.Method = "POST";

        req.ContentLength = bytes.Length;
        Stream os = req.GetRequestStream();
        os.Write(bytes, 0, bytes.Length); //以上向伺服器post信息。 
        os.Close();
        HttpWebResponse resp = (HttpWebResponse)req.GetResponse();//以下獲取伺服器返回信息
        if (resp == null) return null;
        StreamReader sr = new StreamReader(resp.GetResponseStream(), Encoding.GetEncoding("UTF-8"));
        string sReturn = sr.ReadToEnd().Trim();
        resp.Close(); sr.Close();
        return sReturn;
    }