灌水小程序（aspx）

远程提交表单，进行灌水，程序简单，如果留言板有验证码，哪就over了

 string URL = "http://localhost:3359/Web/Message.aspx";

        #region  //接受返回的页面
        //方法一
        //HttpWebRequest request = WebRequest.Create(URL) as HttpWebRequest;
        //request.Method = "GET";
        //request.KeepAlive = false;
        //HttpWebResponse response = request.GetResponse() as HttpWebResponse;
        //Stream stream = response.GetResponseStream();
        //StreamReader reader = new StreamReader(stream, Encoding.UTF8);
        // string srcString = reader.ReadToEnd();

        //方法二
        WebClient webClient = new WebClient();
        byte[] responseBytes = webClient.DownloadData(URL);
        string srcString = Encoding.UTF8.GetString(responseBytes);

        #endregion

        // 获取页面的 VeiwState   
        string regViewState = "<input type=\"hidden\" name=\"__VIEWSTATE\" id=\"__VIEWSTATE\" value=\"(?<viewState>[^\\s\t\r\n\"\"'<>]*)\" />";
        Match mathView = Regex.Match(srcString, regViewState, RegexOptions.IgnoreCase | RegexOptions.Multiline);
        string viewState = mathView.Groups[1].Value;

        // 获取页面的 EventValidation      
        string regEvent = "<input type=\"hidden\" name=\"__EVENTVALIDATION\" id=\"__EVENTVALIDATION\" value=\"(?<viewState>[^\\s\t\r\n\"\"'<>]*)\" />";
        Match matchEvent = Regex.Match(srcString, regEvent, RegexOptions.IgnoreCase | RegexOptions.Multiline);
        string eventValidation = matchEvent.Groups[1].Value;
                     

        //自动提交
        string submitButton = "留言";
        string txtTitle = this.txtContent.Text; //标题
        string txtContent = this.txtTitle.Text; //留言内容

        // 将文本转换成 URL 编码字符串
        viewState = System.Web.HttpUtility.UrlEncode(viewState);
        eventValidation = System.Web.HttpUtility.UrlEncode(eventValidation);
        submitButton = System.Web.HttpUtility.UrlEncode(submitButton);

        // 要提交的字符串数据。格式形如:user=uesr1&password=123
        string postString = string.Format("txtTitle={0}&txtContent={1}" + "&btnSave=" + submitButton + "&__VIEWSTATE=" + viewState + "&__EVENTVALIDATION=" + eventValidation, txtTitle, txtContent);
        byte[] postData = Encoding.UTF8.GetBytes(postString);  // 将字符串转换成字节数组

        //循环提交
        int num = Convert.ToInt32(txtNum.Text);
        for (int i = 0; i <= num; i++)
        {
            webClient = new WebClient();
            webClient.Headers.Add("Content-Type", "application/x-www-form-urlencoded");
            webClient.UploadData(URL, "POST", postData); // 上传数据，返回页面的字节数组    
        }
        ClientScriptManager cs=Page.ClientScript;
        cs.RegisterClientScriptBlock(typeof(Page),"","<script>alert('执行完成');</script>");      

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