使用http通訊協定抓取遠端檔案

來源檔案位址 超連結
ex: "http://tw.yahoo.com/index.htm"
儲存檔案位址 本機儲存位址
ex: "c:\download\index.htm"

using System; 
using System.IO; 
using System.Text; 
using System.Net; 
 
        static void get_file(string[] args) 
        { 
            try 
            { 
                string fn = "超連結"; 
                HttpWebRequest httpRequest = (HttpWebRequest)WebRequest.Create(fn); 
                HttpWebResponse httpResponse = (HttpWebResponse)httpRequest.GetResponse(); 
                Console.WriteLine("File size = " + httpResponse.ContentLength); 
                    System.IO.Stream datastream = httpResponse.GetResponseStream(); 
                    byte[] buffer = new byte[8192]; 
                    FileStream fs = new FileStream("本機儲存位址", FileMode.Create, FileAccess.Write); 
                    int size = 0; 
                    do 
                    { 
                        size = datastream.Read(buffer, 0, buffer.Length); 
                        if (size > 0) 
                            fs.Write(buffer, 0, size); 
                    } while (size > 0); 
                    Console.WriteLine(fn + " download Done!!"); 
                    fs.Close(); 
                    httpResponse.Close(); 
            } 
            catch(Exception) 
            { 
                Console.WriteLine("Url not exists!"); 
            } 
            Console.ReadKey(); 
        }