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TimeSpan.Addition Operator

Adds two specified TimeSpan instances.

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

public static TimeSpan operator +(
	TimeSpan t1,
	TimeSpan t2


Type: System.TimeSpan
The first time interval to add.
Type: System.TimeSpan
The second time interval to add.

Return Value

Type: System.TimeSpan
An object 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.

.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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