Automatically decompress gzip response via WebClient.DownloadData

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WebClient uses HttpWebRequest under the covers. And HttpWebRequest supports gzip/deflate decompression. See HttpWebRequest AutomaticDecompression property

However, WebClient class does not expose this property directly. So you will have to derive from it to set the property on the underlying HttpWebRequest.

class MyWebClient : WebClient
{
    protected override WebRequest GetWebRequest(Uri address)
    {
        HttpWebRequest request = base.GetWebRequest(address) as HttpWebRequest;
        request.AutomaticDecompression = DecompressionMethods.Deflate | DecompressionMethods.GZip;
        return request;
    }
}

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