DateTime.Addition Operator

Adds a specified time interval to a specified date and time, yielding a new date and time.

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

Public Shared Operator + ( _
	d As DateTime, _
	t As TimeSpan _
) As DateTime


Type: System.DateTime

The date and time value to add.

Type: System.TimeSpan

The time interval to add.

Return Value

Type: System.DateTime
An object that is the sum of the values of d and t.


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

The following example demonstrates the addition operator.

Dim dTime As Date = #8/5/1980#

' tSpan is 17 days, 4 hours, 2 minutes and 1 second. 
Dim tSpan As New TimeSpan(17, 4, 2, 1)

Dim result1, result2 As Date 

' Result gets 8/22/1980 4:02:01 AM.
result1 = Date.op_Addition(dTime, tSpan)

result2 = dTime + tSpan 

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0, 1.1

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

XNA Framework

Supported in: 3.0, 2.0, 1.0

Portable Class Library

Supported in: Portable Class Library

Supported in: Windows Phone 8.1

Supported in: Windows Phone Silverlight 8.1

Supported in: Windows Phone Silverlight 8
Was this page helpful?
(1500 characters remaining)
Thank you for your feedback
© 2015 Microsoft