read from the web.config

web.config

   16   <appSettings>

   28     <add key="EndDate" value="2009-02-03 03:00 AM"/> 

   29   </appSettings>

Code behind

    3 using System.Configuration;

    ...

   54         string sEnd = ConfigurationManager.AppSettings["EndDate"].ToString();

   55         DateTime dtEnd = DateTime.ParseExact(sEnd, "yyyy-MM-dd HH:mm tt", null);