下载网页源码时,如何控制下载的时间超时5秒停止下载

Question

如题：下面为下载网页源代码，求朋友如何更改 private string DownHtml(string url, int IntEncoding)
        {
            string temphtml = "";
            if (IntEncoding==1)
            { 
               WebClient webc = new WebClient();
               webc.Credentials = CredentialCache.DefaultCredentials;
               Byte[] pageData = webc.DownloadData(url);
          
               temphtml= Encoding.Default.GetString(pageData);
               if (temphtml.ToLower().Contains("charset=utf-8")==true){
                  temphtml= Encoding.UTF8.GetString(pageData);
               }
               return temphtml;
             }
            else
            {
   
                System.Net.HttpWebRequest request = (System.Net.HttpWebRequest)System.Net.WebRequest.Create(url);
                request.UserAgent = "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.2; .NET CLR 1.1.4322; .NET CLR 2.0.50727; InfoPath.1) Web-Sniffer/1.0.24";
                System.Net.WebResponse response = request.GetResponse();
        
                System.IO.Stream resStream = response.GetResponseStream();
                System.IO.StreamReader sr = new System.IO.StreamReader(resStream, System.Text.Encoding.Default);
                temphtml=(sr.ReadToEnd());
                resStream.Close();
                sr.Close();
            
                return temphtml;
             }
            return temphtml;
        }

Answer 1

HttpWebRequest.Timeout 属性  获取或设置 GetResponse 和 GetRequestStream 方法的超时值。 

Answer 2

WebClient webc = new WebClient();
webc.Credentials = CredentialCache.DefaultCredentials;
这种下载方法能不能设置超时时间？楼上的可以用了，谢谢！