DateTime.Subtraction Operator (DateTime, DateTime)

Subtracts a specified date and time from another specified date and time and returns a time interval.

Namespace:  System
Assembly:  mscorlib (in mscorlib.dll)

public static TimeSpan operator -(
	DateTime d1,
	DateTime d2
)

Parameters

d1
Type: System.DateTime
The date and time value to subtract from (the minuend).
d2
Type: System.DateTime
The date and time value to subtract (the subtrahend).

Return Value

Type: System.TimeSpan
The time interval between d1 and d2; that is, d1 minus d2.

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.

NoteNote

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

Supported in: 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Portable Class Library

Supported in: Portable Class Library

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

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