用webClient|webRequest测试首字节响应

在网上寻找首字节响应的测试方法，没有找到，转一下webClient和webRequest的用法。我想，首字节响应的测试方法大概就是使用流，测读取一个字节长度所需的时间吧。浅薄了，有新的了解定及时更新。也请前辈不吝赐教。
引自：http://www.cnblogs.com/anjou/archive/2006/12/25/602943.html

       // 提交按钮的文本
       string submitButton = "登录";
       // 页面的 VeiwState（可以通过IE打开页面，右键“查看源文件”取得）
       string viewState = "/wEPDwUKMTg0NTgwMzM2M2RksjXHwIOzdq/skwDy1k6qTexm2j0=";
       // 页面的 EventValidation（可以通过IE打开页面，右键“查看源文件”取得）
       string eventValidation = "/wEWBAKxhbOEAQKPpuq2CALyveCRDwLejM6fDwP2723lUdzBJVBIAVzbpM2sXYqc";

       submitButton = System.Web.HttpUtility.UrlEncode(submitButton);
       viewState = System.Web.HttpUtility.UrlEncode(viewState);
       eventValidation = System.Web.HttpUtility.UrlEncode(eventValidation);

       try
       {
           // 要提交表单的URI字符串。
           string uriString = "http://www.xxx.com/Login.aspx";
           // 要提交的字符串数据。格式形如:user=uesr1&password=123
           string postString = "userName=1&password=1" + "&loginButton=" + submitButton + "&__VIEWSTATE=" + viewState + "&__EVENTVALIDATION=" + eventValidation;
           // 初始化WebClient
           WebClient webClient = new WebClient();
           webClient.Headers.Add("Content-Type", "application/x-www-form-urlencoded");
           // 将字符串转换成字节数组
           byte[] postData = Encoding.ASCII.GetBytes(postString);
           // 上传数据，返回页面的字节数组
           byte[] responseData = webClient.UploadData(uriString, "POST", postData);
           // 将返回的将字节数组转换成字符串(HTML);
           //     ASP.NET 返回的页面一般是Unicode,如果是简体中文应使用 
           //     Encoding.GetEncoding("GB2312").GetString(responseData)
           string srcString = Encoding.UTF8.GetString(responseData);
       }
       catch (WebException we)
       {
           string msg = we.Message;
       }

下面是另一端，包括了webClient和webRequest的用法
引用自：http://dotnet.aspx.cc/ShowDetail.aspx?id=0A6660CE-4138-41EF-B882-15DB65564709

using System; using System.Collections; using System.ComponentModel; using System.Data; using System.Drawing; using System.Web; using System.Web.SessionState; using System.Web.UI; using System.Web.UI.WebControls; using System.Web.UI.HtmlControls; using System.IO; using System.Net; using System.Text; using System.Text.RegularExpressions; namespace eMeng.Exam { /// <summary> /// GetPageHtml 的摘要说明。 /// </summary> public class GetPageHtml : System.Web.UI.Page { protected System.Web.UI.WebControls.Button WebClientButton; protected System.Web.UI.WebControls.Button WebRequestButton; protected System.Web.UI.WebControls.TextBox ContentHtml; protected System.Web.UI.WebControls.TextBox UrlText; protected System.Web.UI.WebControls.Button GetText; private string PageUrl = ""; private void Page_Load(object sender, System.EventArgs e) {} #region Web Form Designer generated code override protected void OnInit(EventArgs e) { InitializeComponent(); base.OnInit(e); } /// <summary> /// 设计器支持所需的方法 - 不要使用代码编辑器修改 /// 此方法的内容。 /// </summary> private void InitializeComponent() { this.WebClientButton.Click += new System.EventHandler(this.WebClientButton_Click); this.WebRequestButton.Click += new System.EventHandler(this.WebRequestButton_Click); this.GetText.Click += new System.EventHandler(this.GetText_Click); this.Load += new System.EventHandler(this.Page_Load); } #endregion private void WebClientButton_Click(object sender, System.EventArgs e) { PageUrl = UrlText.Text; WebClient wc = new WebClient(); wc.Credentials = CredentialCache.DefaultCredentials; ///方法一： Byte[] pageData = wc.DownloadData(PageUrl); ContentHtml.Text = Encoding.Default.GetString(pageData); /// 方法二： /// ***************代码开始********** /// Stream resStream = wc.OpenRead(PageUrl); /// StreamReader sr = new StreamReader(resStream,System.Text.Encoding.Default); /// ContentHtml.Text = sr.ReadToEnd(); /// resStream.Close(); /// **************代码结束******** /// wc.Dispose(); } private void WebRequestButton_Click(object sender, System.EventArgs e) { PageUrl = UrlText.Text; WebRequest request = WebRequest.Create(PageUrl); WebResponse response = request.GetResponse(); Stream resStream = response.GetResponseStream(); StreamReader sr = new StreamReader(resStream, System.Text.Encoding.Default); ContentHtml.Text = sr.ReadToEnd(); resStream.Close(); sr.Close(); } private void GetText_Click(object sender, System.EventArgs e) { PageUrl = UrlText.Text; WebRequest request = WebRequest.Create(PageUrl); WebResponse response = request.GetResponse(); Stream resStream = response.GetResponseStream(); StreamReader sr = new StreamReader(resStream, System.Text.Encoding.Default); ContentHtml.Text = sr.ReadToEnd(); resStream.Close(); sr.Close(); ContentHtml.Text = Regex.Replace(ContentHtml.Text,"<[^>]*>", ""); //替换空格 ContentHtml.Text = Regex.Replace(ContentHtml.Text,"\\s+", " "); } } }