C# HTTP下载文件

代码：

/// <summary>
/// Http下载文件
</summary>
public static string HttpDownloadFile(string url,string path)
{
    // 设置参数
    HttpWebRequest request = WebRequest.Create(url) as HttpWebRequest;

    发送请求并获取相应回应数据
    HttpWebResponse response = request.GetResponse()  HttpWebResponse;
    直到request.GetResponse()程序才开始向目标网页发送Post请求
    Stream responseStream = response.GetResponseStream();

    创建本地文件写入流
    Stream stream = new FileStream(path,FileMode.Create);

    byte[] bArr = new byte[1024];
    int size = responseStream.Read(bArr,0,(int)bArr.Length);
    while (size > 0)
    {
        stream.Write(bArr,,size);
        size = responseStream.Read(bArr,1)">)bArr.Length);
    }
    stream.Close();
    responseStream.Close();
    return path;
}

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