WebProxy错误：需要代理身份验证 [英] WebProxy error: Proxy Authentication Required

问题描述

我使用以下代码从互联网获取html数据：

I use the following code to obtaing html data from the internet:

WebProxy p = new WebProxy("localproxyIP:8080", true);
p.Credentials = new NetworkCredential("domain\\user", "password");
WebRequest.DefaultWebProxy = p;
WebClient client = new WebClient();
string downloadString = client.DownloadString("http://www.google.com");

但是出现以下错误：需要代理身份验证。
我无法使用默认代理，因为我的代码从特殊帐户下的Windows服务运行，而该帐户没有默认代理设置。
因此，我想在代码中指定所有代理设置。
请建议我如何解决此错误。

But the following error is appeared: "Proxy Authentication Required". I can't use default proxy because of my code runs from windows service under the special account which there is no default proxy settings for. So, I want to specidy all proxy settings in my code. Please advice me how to resolve this error.

推荐答案

您必须设置WebClient.Proxy属性。

You've to set the WebClient.Proxy Property..

WebProxy p = new WebProxy("localproxyIP:8080", true);
p.Credentials = new NetworkCredential("domain\\user", "password");
WebRequest.DefaultWebProxy = p;
WebClient client = new WebClient();
**client.Proxy = p;**
string downloadString = client.DownloadString("http://www.google.com");

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