C# Soket通信如何获取网页动态信息（如何执行Ajax）

Question

我通过这种方式获取网页源码  网页中的Ajax数据
switch (frmMain.intVersionType)
                {
                    case -1:
                        bool isDownLoad = WebClientDownLoadHTML(ResponseUri.ToString(), intURLID);
                        return;
                    case 0:
                        strSendData = "GET " + ResponseUri.ToString() + " HTTP/1.0\r\n";
                        break;
                    case 1:
                        strSendData = "GET " + ResponseUri.ToString() + " HTTP/1.1\r\n";
                        break;
                }
                strSendData += "Accept: */*\r\n"
                                 + "Referer: " + ResponseUri.ToString() + "\r\n"
                                 + "Accept-Language: zh-cn\r\n"
                                 + "User-Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.1)\r\n"
                                 + "Proxy-Connection: Keep-Alive\r\n"
                                 + "Host: " + ResponseUri.Host + "\r\n\r\n";
                webclientDownLoadHTML.Incept += new InceptEvent(wcHTML_Incept);                                   // 接收数据事件 
                webclientDownLoadHTML.Refresh += new RefreshEvent(wcHTML_Refresh);
                webclientDownLoadHTML.Error += new ErrorEvent(wcHTML_Error);
                string strIP = Dns.GetHostEntry(ResponseUri.Host).AddressList[0].ToString();  // Ip地址
                int intPort = ResponseUri.Port;
                webclientDownLoadHTML.Conn(strIP, intPort);
                // 连接服务器
                if (webclientDownLoadHTML.Activ)                                                                  // 是否连接成功
                {
                    webclientDownLoadHTML.Initialize();                                                           // 初始化变量
                    byte[] Buffer = System.Text.Encoding.Default.GetBytes(strSendData);
                    webclientDownLoadHTML.Send(Buffer, ResponseUri.ToString(), intURLID);                          // 开始下载页面
                }C#webbrowser以及Application.DoEvents()实现采集动态网页这种效率太低了我不想使用！
谁有好的想法，或有执行动态执行JS的方式？
我试过使用：MSScriptControl但是只能执行我指定方法给参数的脚本，却实现不了动态