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TimeSpan.Add Method

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

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

member Add : 
        ts:TimeSpan -> TimeSpan 


Type: System.TimeSpan
The time interval to add.

Return Value

Type: System.TimeSpan
A new object that represents the value of this instance plus the value of ts.


The resulting TimeSpan 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 creates several pairs of TimeSpan objects and calculates their sum with the Add method.

No code example is currently available or this language may not be supported.

.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.