当HTTP状态不是200时，ASP.NET获取Web响应

Question

我需要在响应状态代码不是200 OK的情况下从HTTP GET读取响应。有时它是401，其他403，但是会有响应内容。如果我尝试使用HttpWebResponse和HttpWebRequest类，它会在响应状态不是200 OK时抛出异常。有什么建议吗？

Answer 1

var request = (HttpWebRequest)WebRequest.Create("http://stackoverflow.com/1");
try
{
    using (WebResponse response = request.GetResponse())
    {
        // Success
    }
}
catch (WebException e)
{
    using (WebResponse response = e.Response)
    {
        HttpWebResponse httpResponse = (HttpWebResponse)response;
        Console.WriteLine("Error code: {0}", httpResponse.StatusCode);
        using (var streamReader = new StreamReader(response.GetResponseStream()))
            Console.WriteLine(streamReader.ReadToEnd());
    }
}