与日期比较

Question

        #region XML Reader (Load the XML file)
        XmlDocument xdoc = new XmlDocument();
        xdoc.Load(root + infoFolder + "setting.xml");
        #endregion

        #region Find out if its time to update installation files
        var DateNow = DateTime.Now.ToString("yyyy-MM-dd");
        var LastUpdate = xdoc.SelectSingleNode("/Settings/TimeUpdated").InnerText;

        if (DateNow.CompareTo(LastUpdate) > 0)
        {
          MessageBox.Show ("Last time you updated you installation files was" + LastUpdate + ". Today its " + DateNow,("Its been 14days.(or more)"));
        }
        #endregion

这就是我想出来的，但这只是比较'Datenow'是否高于'Lasteupdate' 我认为CompareTo不适用于约会。

我真正希望比较Datenow和Lasteupdate，如果它的14天不同，那么就显示消息框。

这是我解决问题的方法：

  #region Find out if its time to update installation files
            String LastUpdate = xdoc.SelectSingleNode("Knowhow/Settings/TimeUpdated").InnerText;

            DateTime dt1 = DateTime.Now.AddDays(-14);
            DateTime dt2 = DateTime.Parse(LastUpdate);

            String DateToday = dt1.ToString("yyyy-MM-dd");
            String DateINFO = dt2.ToString("yyyy-MM-dd");



            if (dt1.Date > dt2.Date)
            {
                MessageBox.Show("Last time you updated you installation files was" + DateINFO + ". Its been Its been 14days.(or more)");
                ;            }
            else
            {
                MessageBox.Show("Dont need to update");
            }

            #endregion