C# download 网页

baigoogledu之 -------------------------------很多方法啊 using System.Net; using System.IO; using System.Text; //方法一： // Create a request for the URL. WebRequest request = WebRequest.Create("http://www.hao123.com"); // If required by the server, set the credentials. request.Credentials = CredentialCache.DefaultCredentials; // Get the response. HttpWebResponse response = (HttpWebResponse)request.GetResponse(); // Display the status. Response.Write(response.StatusDescription); // Get the stream containing content returned by the server. Stream dataStream = response.GetResponseStream(); // Open the stream using a StreamReader for easy access. StreamReader reader = new StreamReader(dataStream,Encoding.Default); // Read the content. string responseFromServer = reader.ReadToEnd(); // Display the content. Response.Write(responseFromServer); // Cleanup the streams and the response. reader.Close(); dataStream.Close(); response.Close(); //方法二： WebClient client = new WebClient(); // Add a user agent header in case the // requested URI contains a query. client.Headers.Add("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.2; .NET CLR 1.0.3705;)"); Stream data = client.OpenRead("http://www.hao123.com"); StreamReader reader = new StreamReader(data,Encoding.Default); string s = reader.ReadToEnd(); Response.Write(s); data.Close(); reader.Close(); //方法三： WebClient client = new WebClient(); //client.DownloadFile("http://www.hao123.com","123.htm"); string reply = client.DownloadString("http://www.hao123.com"); Response.Write(reply); ---------------------- 获取到返回的网页字符，自己截取前1000个字节