DateTime.Subtraction Operator (DateTime, DateTime)

The Subtraction(DateTime, DateTime) method does not consider the value of the Kind property of the two DateTime values when performing the subtraction. Before subtracting DateTime objects, ensure that the objects represent times in the same time zone. Otherwise, the result will include the difference between time zones.

Note
The DateTimeOffset.Subtraction(DateTimeOffset, DateTimeOffset) method does consider the difference between time zones when performing the subtraction.

The following example demonstrates the Subtract method and the subtraction operator.

			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;

.NET Framework

.NET Framework Client Profile

Portable Class Library

.NET for Windows Store apps

Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

Reference

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