如何向WebRequest添加cookie？

我正在尝试对一些代码进行单元测试，我需要替换它：

  HttpWebRequest httpWebRequest = (HttpWebRequest)WebRequest.Create( uri );
  httpWebRequest.CookieContainer = new CookieContainer();

with

  WebRequest webRequest = WebRequest.Create( uri );
  webRequest.CookieContainer = new CookieContainer(); 

基本上，如何在不使用 HttpWebRequest 的情况下将 cookie 获取到请求中？

根据您的评论，您可能会考虑写一个扩展方法:

public static bool TryAddCookie(this WebRequest webRequest, Cookie cookie)
{
    HttpWebRequest httpRequest = webRequest as HttpWebRequest;
    if (httpRequest == null)
    {
        return false;
    }

    if (httpRequest.CookieContainer == null)
    {
        httpRequest.CookieContainer = new CookieContainer();
    }

    httpRequest.CookieContainer.Add(cookie);
    return true;
}

然后你可以有这样的代码：

WebRequest webRequest = WebRequest.Create( uri );
webRequest.TryAddCookie(new Cookie("someName","someValue"));