详解crifan的C#库：crifanLib.cs

第 7 章 crifanLib.cs之Cookie

    //extrat the domain url from original url
    //from
    //http://answers.yahoo.com/question/index?qid=20130323071141AA8PffP
    //get
    //http://answers.yahoo.com
    public string getDomainUrl(string url)
    {
        string domainUrl = "";

        Regex urlRx = new Regex(@"((https)|(http)|(ftp))://[\w\-\.]+");
        Match foundUrl = urlRx.Match(url);
        if (foundUrl.Success)
        {
            //int slashIndex = foundUrl.Index + foundUrl.Length;
            domainUrl = url.Substring(0, foundUrl.Length);
        }
        else
        {
            domainUrl = "";
        }

        return domainUrl;
    }