用C#.net在Winform中从internet下载文件

http://www.oschina.net/code/snippet_347_3740

01/// <summary>

02/// 下载文件

03/// </summary>

04/// <param name="URL">下载文件地址</param>

05/// <param name="Filename">下载后另存为（全路径）</param>

06        

07private bool DownloadFile(string URL, string filename)

08{

09    try

10    {

11        System.Net.HttpWebRequest Myrq = (System.Net.HttpWebRequest)System.Net.HttpWebRequest.Create(URL);

12        System.Net.HttpWebResponse myrp = (System.Net.HttpWebResponse)Myrq.GetResponse();

13        System.IO.Stream st = myrp.GetResponseStream();

14        System.IO.Stream so = new System.IO.FileStream(filename, System.IO.FileMode.Create);

15        byte[] by = new byte[1024];

16        int osize = st.Read(by, 0, (int)by.Length);

17        while (osize > 0)

18        {

19            so.Write(by, 0, osize);

20            osize = st.Read(by, 0, (int)by.Length);

21        }

22        so.Close();

23        st.Close();

24        myrp.Close();

25        Myrq.Abort();

26        return true;

27    }

28    catch (System.Exception e)

29    {

30        writeLogFile(e.Message, true);

31        return false;

32    }

33}