下载网页内容存入字符串
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/// <summary>
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/// Downloads a web page from the Internet and returns the HTML as a string. .
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/// </summary>
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/// <param name="url">The URL to download from.</param>
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/// <returns>The HTML or null if the URL isn't valid.</returns>
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public static string DownloadWebPage(Uri url)
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{
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try
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{
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HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
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request.Headers["Accept-Encoding"] = "gzip";
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request.Headers["Accept-Language"] = "en-us";
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request.Credentials = CredentialCache.DefaultNetworkCredentials;
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request.AutomaticDecompression = DecompressionMethods.GZip;
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using (WebResponse response = request.GetResponse())
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{
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using (StreamReader reader = new StreamReader(response.GetResponseStream()))
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{
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return reader.ReadToEnd();
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}
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}
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}
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catch (Exception)
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{
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return null;
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}
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}
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