Subtraction from 'DateTime'

Question

I want to subtract from DateTime . Example:

 date1 = 13/01/2004 12:20:00 result = Subtract(date1-15); 

Expected Result:

 13/01/2004 12:05:00 

How can I do it?

Answer 1

You can take a look at the AddMinutes method:

 var result = date1.AddMinutes(-15); 

Answer 2

 System.DateTime date1 = new System.DateTime(1996, 6, 3, 22, 15, 0); System.DateTime date2 = new System.DateTime(1996, 12, 6, 13, 2, 0); System.DateTime date3 = new System.DateTime(1996, 10, 12, 8, 42, 0); // diff1 gets 185 days, 14 hours, and 47 minutes. System.TimeSpan diff1 = date2.Subtract(date1); // date4 gets 4/9/1996 5:55:00 PM. System.DateTime date4 = date3.Subtract(diff1); // diff2 gets 55 days 4 hours and 20 minutes. System.TimeSpan diff2 = date2 - date3; // date5 gets 4/9/1996 5:55:00 PM. System.DateTime date5 = date1 - diff2; 

Answer 3

Use DateTime.Add(TimeSpan) with a negative value.

Or use DateTime.AddDays() , DateTime.AddMinutes() , etc.

Answer 4

You can try the following:

 TimeSpan t1 = new TimeSpan(16,0,0); DateTime d2= datetime.Subtract(t1);