get day difference between two dates in c#?

I found out it was more simple than I thought.
subtracting one date from another returns not a datetime as I thought I saw, but a TimeSpan object.
So you can do this:
TimeSpan difference = endTime.Subtract(startTime);
and then get the days with: difference.Days

this is the coding for different between 2 dates in day-hour-min-sec in c#

Timespan obj= Datetime.Parse("5/24/1984")-DateTime.now;
label3.text=string.Format("Only{0}days,{1}hours,{2}minutes,{3}seconds left)!",obj.Days,obj.Minutes,obj.Seconds);

How to get the difference between the 2 dates in c sharp.