//using System;//using System.Net;//using System.Text;//using System.IO;//--------------------------------------------static void Main(string[] args){ //StreamReader讀取 int count = 0; using (Stream readerStream = new FileStream(@"d:/list.txt", FileMode.Open)) using (StreamReader reader = new StreamReader(readerStream, Encoding.UTF8)) using (WebClient client = new WebClient()) {  string line;  while ((line = reader.ReadLine()) != null)  {   count++;   Console.WriteLine(line + " " + count);   Uri uri = new Uri(line);   if (uri!=null)   {    string filename = Path.GetFileName(uri.LocalPath);    client.DownloadFile(uri, @"c:/pictures/"+filename);    Console.WriteLine("文件："+filename+" 下載成功！" + " 計數："+ count);   }   else   {    Console.WriteLine("路徑：" + line + " 不是下載地址！失敗序號："+count );   }     } } Console.WriteLine("下載完成！"); Console.ReadKey();}