C#利用WebClient 兩種方式下載文件（一）

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WebClient client = new WebClient();

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第一種

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string URLAddress = @"http://files.cnblogs.com/x4646/tree.zip";

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string receivePath=@"C:\";

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client.DownloadFile(URLAddress, receivePath + System.IO.Path.GetFileName(URLAddress));

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就OK了。

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第二種

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　Stream str = client.OpenRead(URLAddress);
???StreamReader reader = new StreamReader(str);
???byte[] mbyte = new byte[1000000];
???int allmybyte = (int)mbyte.Length;
???int startmbyte = 0;

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?? while (allmybyte > 0)
???{

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????int m = str.Read(mbyte, startmbyte, allmybyte);
????if (m == 0)
?????break;

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????startmbyte += m;
????allmybyte -= m;
???}

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???reader.Dispose();
???str.Dispose();

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?? string path = receivePath + System.IO.Path.GetFileName(URLAddress);
???FileStream fstr = new FileStream(path, FileMode.OpenOrCreate, FileAccess.Write);
???fstr.Write(mbyte, 0, startmbyte);
???fstr.Flush();
???fstr.Close();

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