HttpClient Request like browser

Here you go – note you have to decompress the gzip encoded-result you get back as per mleroy:

private static readonly HttpClient _HttpClient = new HttpClient();

private static async Task<string> GetResponse(string url)
{
    using (var request = new HttpRequestMessage(HttpMethod.Get, new Uri(url)))
    {
        request.Headers.TryAddWithoutValidation("Accept", "text/html,application/xhtml+xml,application/xml");
        request.Headers.TryAddWithoutValidation("Accept-Encoding", "gzip, deflate");
        request.Headers.TryAddWithoutValidation("User-Agent", "Mozilla/5.0 (Windows NT 6.2; WOW64; rv:19.0) Gecko/20100101 Firefox/19.0");
        request.Headers.TryAddWithoutValidation("Accept-Charset", "ISO-8859-1");

        using (var response = await _HttpClient.SendAsync(request).ConfigureAwait(false))
        {
            response.EnsureSuccessStatusCode();
            using (var responseStream = await response.Content.ReadAsStreamAsync().ConfigureAwait(false))
            using (var decompressedStream = new GZipStream(responseStream, CompressionMode.Decompress))
            using (var streamReader = new StreamReader(decompressedStream))
            {
                return await streamReader.ReadToEndAsync().ConfigureAwait(false);
            }
        }
    }
}

call such like:

var response = await GetResponse("http://www.livescore.com/").ConfigureAwait(false); // or var response = GetResponse("http://www.livescore.com/").Result;