C# 判断网站是否能访问或者断链

参考网站：http://www.cnblogs.com/junny/archive/2012/10/30/2745978.html

public bool CheckUrlVisit(string url)
    {
        try
        {
            HttpWebRequest req = (HttpWebRequest)WebRequest.Create(url);
            HttpWebResponse resp = (HttpWebResponse)req.GetResponse();
            if (resp.StatusCode == HttpStatusCode.OK)
            {
　　　　　　　　　　resp.Close(); 
                return true;
            }
        }
        catch (WebException webex)
        {
            return false;
        }

        return false;

    }