DateTime.AddSeconds Method

Microsoft Silverlight will reach end of support after October 2021. Learn more.

Returns a new DateTime that adds the specified number of seconds to the value of this instance.

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

Syntax

'Declaration
Public Function AddSeconds ( _
    value As Double _
) As DateTime
public DateTime AddSeconds(
    double value
)

Parameters

  • value
    Type: System.Double
    The number of whole and fractional seconds to add. This value can be positive or negative.

Return Value

Type: System.DateTime
An object whose value is the sum of the date and time represented by this instance and the number of seconds represented by value.

Exceptions

Exception Condition
ArgumentOutOfRangeException

The resulting DateTime is earlier than DateTime.MinValue or later than DateTime.MaxValue.

Remarks

This method does not change the value of this DateTime. Instead, a new DateTime is returned whose value is the result of this operation.

The fractional part of value is the fractional part of a second. For example, 4.5 is equivalent to 4 seconds, 500 milliseconds, and 0 ticks.

The value parameter is rounded to the nearest millisecond.

Version Information

Silverlight

Supported in: 5, 4, 3

Silverlight for Windows Phone

Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0

XNA Framework

Supported in: Xbox 360, Windows Phone OS 7.0

Platforms

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.