asp.net – 获取当前请求的凭据以便在WebRequest中使用

WebRequest req = HttpWebRequest.Create(checkUri.AbsoluteUri);
WebResponse res = req.GetResponse();

虽然我可以从浏览器访问checkUri,但在进行上述检查时我得到401.我想我必须设置

req.Credentials

但我不知道当前凭据的存储位置…

有任何想法吗？

–Update–

>集成Windows身份验证：否>允许匿名：关闭> Caler：同一网站页面上的链接(GET)>模拟：默认为关闭(甚至不知道如何在asp.net mvc中启用它)

HttpWebRequest req = (HttpWebRequest)WebRequest.Create(uri);
// Add the current authentication cookie to the request
HttpCookie cookie = HttpContext.Current.Request.Cookies[FormsAuthentication.FormsCookieName];
Cookie authenticationCookie = new Cookie(
    FormsAuthentication.FormsCookieName,
    cookie.Value,
    cookie.Path,
    HttpContext.Current.Request.Url.Authority);

req.CookieContainer = new CookieContainer();
req.CookieContainer.Add(authenticationCookie);

WebResponse res = req.GetResponse();