This documentation is archived and is not being maintained.

DateTimeOffset.Subtraction Operator (DateTimeOffset, DateTimeOffset)

Subtracts one DateTimeOffset object from another and yields a time interval.

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

public static TimeSpan operator -(
	DateTimeOffset left,
	DateTimeOffset right
)

Parameters

left
Type: System.DateTimeOffset
The minuend.
right
Type: System.DateTimeOffset
The subtrahend.

Return Value

Type: System.TimeSpan
An object that represents the difference between left and right.

The Subtraction method defines the subtraction operation for DateTimeOffset objects. It enables code such as the following:


DateTimeOffset firstDate = new DateTimeOffset(2008, 3, 25, 18, 0, 0, 
                                              new TimeSpan(-7, 0, 0));
DateTimeOffset secondDate = new DateTimeOffset(2008, 3, 25, 18, 0, 0, 
                                               new TimeSpan(-5, 0, 0));
DateTimeOffset thirdDate = new DateTimeOffset(2008, 2, 28, 9, 0, 0, 
                                              new TimeSpan(-7, 0, 0));
TimeSpan difference;

difference = firstDate - secondDate;
Console.WriteLine("({0}) - ({1}): {2} days, {3}:{4:d2}", 
                  firstDate.ToString(), 
                  secondDate.ToString(), 
                  difference.Days, 
                  difference.Hours, 
                  difference.Minutes);      

difference = firstDate - thirdDate;
Console.WriteLine("({0}) - ({1}): {2} days, {3}:{4:d2}", 
                  firstDate.ToString(), 
                  secondDate.ToString(), 
                  difference.Days, 
                  difference.Hours, 
                  difference.Minutes); 
// The example produces the following output:
//    (3/25/2008 6:00:00 PM -07:00) - (3/25/2008 6:00:00 PM -05:00): 0 days, 2:00
//    (3/25/2008 6:00:00 PM -07:00) - (3/25/2008 6:00:00 PM -05:00): 26 days, 9:00                                 


Languages that do not support custom operators and operator overloading can call the DateTimeOffset.Subtract(DateTimeOffset) method instead.

.NET Framework

Supported in: 4, 3.5 SP1, 3.0 SP1, 2.0 SP1

.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 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.
Show: