.net URL请求页面内容 Unable to connect to the remote server

private static string DownloadFile(string fetchUrl, int requestTimeout, int requestRetryCount)
        {
            while (true)
            {
                try
                {
                    using (HttpWebResponse response = (HttpWebResponse)CreateWebRequest(fetchUrl, requestTimeout).GetResponse())
                    {
                        using (StreamReader reader = new StreamReader(response.GetResponseStream()))
                        {
                            return reader.ReadToEnd();
                        }
                    }
                }
                catch
                {
                    if (requestRetryCount <= 0)
                    {
                        throw;
                    }
                    requestRetryCount--;
                }
            }
        }

private static WebRequest CreateWebRequest(string fetchUrl, int requestTimeout)
        {
            HttpWebRequest.DefaultCachePolicy = new HttpRequestCachePolicy(HttpRequestCacheLevel.Default);
            WebRequest request = WebRequest.Create(new Uri(fetchUrl));
            request.Timeout = requestTimeout;
            request.Method = "GET";
            request.ContentType = "application/x-www-form-urlencoded";
            request.Credentials = CredentialCache.DefaultCredentials;
            request.CachePolicy = new HttpRequestCachePolicy(HttpRequestCacheLevel.NoCacheNoStore);
            request.Proxy = new WebProxy("sinproxy.southpacific.corp.microsoft.com");
            return request;
        }

注意：

若是报错“Unable to connect to the remote server”  而通过浏览器是可以访问到了，那么你肯定是少掉了这句话，如下，是设置代理的。

request.Proxy = new WebProxy("sinproxy.southpacific.corp.microsoft.com");

通过浏览器和自己代码两种方式的访问URL，要保持环境是一样的。