C# 找不到页面时发生GetResponse错误

当地址无效时，软件在应该得到响应的代码第三行崩溃，有没有办法解决这个问题？

你可以得到这样的响应

HttpWebRequest request = (HttpWebRequest)WebRequest.Create("http://www.google.com/afakepage");
request.Method = WebRequestMethods.Http.Head;
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
bool pageExists = response.StatusCode == HttpStatusCode.OK;

---

这修复了崩溃错误，谢谢！

    HttpWebRequest request = (HttpWebRequest)WebRequest.Create("http://www.google.com/afakepage");
    request.Method = WebRequestMethods.Http.Head;
    try
    {
        using (WebResponse response = request.GetResponse())
        {

        }
    }
    catch (WebException e)
    {
        using (WebResponse response = e.Response)
        {
            HttpWebResponse httpResponse = (HttpWebResponse) response;
            MessageBox.Show(httpRespnse.StatusCode.ToString());
        }
    }