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TimeSpan.Add(TimeSpan) Method

Definition

Returns a new TimeSpan object whose value is the sum of the specified TimeSpan object and this instance.

C#
public TimeSpan Add(TimeSpan ts);

Parameters

ts
TimeSpan

The time interval to add.

Returns

A new object that represents the value of this instance plus the value of ts.

Exceptions

The resulting TimeSpan is less than TimeSpan.MinValue or greater than TimeSpan.MaxValue.

Examples

The following example calls the Add method to add each element in an array of time intervals to a base TimeSpan value.

C#
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} = {2:%d\:hh\:mm\:ss\.ffff}", 
                     baseTimeSpan, interval, baseTimeSpan.Add(interval), 
                     interval < TimeSpan.Zero ? "-" : "+");

// The example displays the following output:
//       1:12:15:16 + 1:12:00:00.0000 = 3:00:15:16.0000
//       1:12:15:16 + 0:01:30:00.0000 = 1:13:45:16.0000
//       1:12:15:16 + 0:00:45:00.0000 = 1:13:00:16.0000
//       1:12:15:16 + 0:00:00:00.5050 = 1:12:15:16.5050
//       1:12:15:16 + 1:17:32:20.0000 = 3:05:47:36.0000
//       1:12:15:16 - 0:07:30:00.0000 = 1:04:45:16.0000

Remarks

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.

Applies to

Product Versions
.NET Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9, 10
.NET Framework 1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
.NET Standard 1.0, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 2.0, 2.1
UWP 10.0

See also