我怎么知道当前时间(不是日期)在 JobStart 和 Job End Time 之间
var JobStartTime = new DateTime(2012,1,1,9,0,0,DateTimeKind.Local); //09:00AM
var JobEndTime = new DateTime(2012,1,1,18,0,0,DateTimeKind.Local); //06:00PM
var CurrentTime = DateTime.Now;