C# 401与网络客户端https

以下代码不断返回401：

        String URI = "https://api.opsourcecloud.net/oec/0.9/myaccount";

        WebClient webClient = new WebClient();

        webClient.Credentials = new NetworkCredential("username", "password");

        string s =  webClient.DownloadString(URI);

        StreamReader reader = new StreamReader( webClient.OpenRead(URI));

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在最后一行。密码和url是正确的。知道我做错了什么吗？

你试过添加代理和域吗

WebClient client = new WebClient();
client.Proxy = new WebProxy("<<your proxy here>>");
client.Proxy.Credentials = new NetworkCredential("login", "password", "domain");

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嗯，要么凭证不正确，要么你正在和一个脾气暴躁的服务器交谈。嗯，这不是凭证。