This documentation is archived and is not being maintained.

TimeSpan.Addition Operator

Updated: March 2009

Adds two specified TimeSpan instances.

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

public static TimeSpan operator +(
	TimeSpan t1,
	TimeSpan t2


Type: System.TimeSpan

A TimeSpan.

Type: System.TimeSpan

A TimeSpan.

Return Value

Type: System.TimeSpan
A TimeSpan whose value is the sum of the values of t1 and t2.


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

The Addition method defines the addition operator for TimeSpan values. It enables code such as the following:

TimeSpan time1 = new TimeSpan(1, 0, 0, 0);   // TimeSpan equivalent to 1 day.
TimeSpan time2 = new TimeSpan(12, 0, 0);     // TimeSpan equivalent to 1/2 day.
TimeSpan time3 = time1 + time2;              // Add the two time spans.

Console.WriteLine("  {0,12}\n +  {1,10}\n   {3}\n    {2,10}", 
                  time1, time2, time3, new String('_', 10));
// The example displays the following output: 
//           1.00:00:00 
//        +    12:00:00 
//          __________ 
//           1.12:00:00

Languages that do not support custom operators can call the Add method instead.

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98, Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC, Xbox 360, Zune

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

.NET Framework

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

.NET Compact Framework

Supported in: 3.5, 2.0, 1.0

XNA Framework

Supported in: 3.0, 2.0, 1.0




March 2009

Added Remarks section and removed the example.

Customer feedback.