C# 文件下载 : WebClient

发布时间：2020-12-15 04:43:05 所属栏目：百科来源：网络整理

导读：request.Proxy.Credentials = CredentialCache.DefaultCredentials; myProxy = = NetworkCredential(ProxyUserName,ProxyUserPasswd,DomainName); request.CachePolicy = System.Net.Cache.RequestCachePolicy(System.Net.Cache.RequestCacheLevel.Reload);

request.Proxy.Credentials = CredentialCache.DefaultCredentials;

myProxy = = NetworkCredential(ProxyUserName,ProxyUserPasswd,DomainName);

request.CachePolicy = System.Net.Cache.RequestCachePolicy(System.Net.Cache.RequestCacheLevel.Reload);

Random rdm = s =+= + s;

contentLength =[] buffer = downloadedLength = currentTimeSpanDataLength = ((currentDataLength = stream.Read(buffer,,BufferSize)) > && !+= (+= ( intDownloadSpeed = (._downloadStopWatch.ElapsedMilliseconds > num5 = ()currentTimeSpanDataLength / num6 = ()._downloadStopWatch.ElapsedMilliseconds / doubleDownloadSpeed = num5 /= ()Math.Round(doubleDownloadSpeed,=

</span><span style="color: #0000ff"&gt;double</span> doubleDownloadPersent = <span style="color: #800080"&gt;0.0</span><span style="color: #000000"&gt;;
</span><span style="color: #0000ff"&gt;if</span> (contentLength > <span style="color: #800080"&gt;0.0</span><span style="color: #000000"&gt;)
{
    doubleDownloadPersent </span>= (<span style="color: #0000ff"&gt;double</span>)downloadedLength /<span style="color: #000000"&gt; contentLength;
}

}

contentLength = DownloadManager.GetContentLength(myHttpWebClient);

downloadedLength += ()currentDataLength;

doubleDownloadPersent = ()downloadedLength / contentLength;

(._downloadStopWatch.ElapsedMilliseconds > num5 = ()currentTimeSpanDataLength / num6 = ()._downloadStopWatch.ElapsedMilliseconds / doubleDownloadSpeed = num5 /

intDownloadSpeed </span>= (<span style="color: #0000ff"&gt;int</span>)Math.Round(doubleDownloadSpeed,<span style="color: #800080"&gt;0</span><span style="color: #000000"&gt;);
</span><span style="color: #008000"&gt;//</span><span style="color: #008000"&gt; 本次网速计算完成后重置时间计时器和数据计数器，开始下次的计算</span>
<span style="color: #0000ff"&gt;this</span><span style="color: #000000"&gt;._downloadStopWatch.Reset();
</span><span style="color: #0000ff"&gt;this</span><span style="color: #000000"&gt;._downloadStopWatch.Start();
currentTimeSpanDataLength </span>= <span style="color: #800080"&gt;0</span><span style="color: #000000"&gt;;

}

((currentDataLength = stream.Read(buffer,BufferSize)) > && !._cancelDownload){}

（编辑：李大同）

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