下载文件

使用WebRequest下载文件

using System;
using System.Collections.Generic;
using System.Text;
using System.Net;
using System.IO;

namespace Util
{
    public class Down
    {
        private void File(string name)
        {
            try
            {
                string url = name;
                string fileName = "E:\\English\\" + url.Substring(url.LastIndexOf("/") + 1);
                WebRequest req = WebRequest.Create(url);
                WebResponse res = req.GetResponse();
                Stream stream = res.GetResponseStream();
                FileStream fs = new FileStream(fileName, FileMode.OpenOrCreate);
                int l;
                byte[] buffer = new byte[1024];
                do
                {
                    l = stream.Read(buffer, 0, buffer.Length);
                    if (l > 0)
                        fs.Write(buffer, 0, l);

                } while (l > 0);

                fs.Close();
                fs.Flush();
                stream.Close();
                stream.Flush();
            }
            catch
            {
                //
            }
        }
    }
}