Subtract Method

TimeSpan.Subtract Method (TimeSpan)

 

Returns a new TimeSpan object whose value is the difference between the specified TimeSpan object and this instance.

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

member Subtract : 
        ts:TimeSpan -> TimeSpan

Parameters

ts
Type: System.TimeSpan

The time interval to be subtracted.

Return Value

Type: System.TimeSpan

A new time interval whose value is the result of the value of this instance minus the value of ts.

Exception Condition
OverflowException

The return value is less than TimeSpan.MinValue or greater than TimeSpan.MaxValue.

The return value must be between TimeSpan.MinValue and TimeSpan.MaxValue; otherwise, an exception is thrown.

The return value is a new TimeSpan; the original TimeSpan is not modified.

The following example uses the Subtract method to calculate the difference between a single TimeSpan value and each of the time intervals in an array. Note that, because TimeSpan format strings do not include negative signs in the result string, the example uses conditional logic to include a negative sign with negative time intervals.

using System;

public class Example
{
   public static void Main()
   {
      TimeSpan baseTimeSpan = new TimeSpan(1, 12, 15, 16);
      // Create an array of timespan intervals.
      TimeSpan[] intervals = { TimeSpan.FromDays(1.5), 
                               TimeSpan.FromHours(1.5), 
                               TimeSpan.FromMinutes(45), 
                               TimeSpan.FromMilliseconds(505),
                               new TimeSpan(1, 17, 32, 20), 
                               new TimeSpan(-8, 30, 0) };
      // Calculate a new time interval by adding each element to the base interval.
      foreach (var interval in intervals)
         Console.WriteLine(@"{0,-10:g} - {3}{1,15:%d\:hh\:mm\:ss\.ffff} = {4}{2:%d\:hh\:mm\:ss\.ffff}",
                           baseTimeSpan, interval, baseTimeSpan.Subtract(interval),
                           interval < TimeSpan.Zero ? "-" : "",
                           baseTimeSpan < interval.Duration() ? "-" : "");
   }
}
// The example displays the following output:
//       1:12:15:16 - 1:12:00:00.0000 = 0:00:15:16.0000
//       1:12:15:16 - 0:01:30:00.0000 = 1:10:45:16.0000
//       1:12:15:16 - 0:00:45:00.0000 = 1:11:30:16.0000
//       1:12:15:16 - 0:00:00:00.5050 = 1:12:15:15.4950
//       1:12:15:16 - 1:17:32:20.0000 = -0:05:17:04.0000
//       1:12:15:16 - -0:07:30:00.0000 = 1:19:45:16.0000

Universal Windows Platform
Available since 4.5
.NET Framework
Available since 1.1
Portable Class Library
Supported in: portable .NET platforms
Silverlight
Available since 2.0
Windows Phone Silverlight
Available since 7.0
Windows Phone
Available since 8.1
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