DateTime.Add Method

Syntax

'Declaration
Public Function Add ( _
    value As TimeSpan _
) As DateTime

public DateTime Add(
    TimeSpan value
)

Exceptions

Remarks

You can use the Add method to add more than one kind of time interval (days, hours, minutes, seconds, or milliseconds) in a single operation. This method's behavior is identical to that of the addition operator. The DateTime structure also supports specialized addition methods (such as AddDays, AddHours, and AddMinutes) for each time interval.

The Add method takes into account leap years and the number of days in a month when performing date arithmetic.

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 Kind property of the new DateTime instance is the same as that of the current instance.

Examples

The following example demonstrates the Add method. It calculates the day of the week that is 36 days (864 hours) from this moment.

' Calculate what day of the week is 36 days from this instant.
Dim today As System.DateTime
Dim duration As System.TimeSpan
Dim answer As System.DateTime

today = System.DateTime.Now
duration = New System.TimeSpan(36, 0, 0, 0)
answer = today.Add(duration)

outputBlock.Text += String.Format("{0:dddd}", answer) + vbCrLf

// Calculate what day of the week is 36 days from this instant.
System.DateTime today = System.DateTime.Now;
System.TimeSpan duration = new System.TimeSpan(36, 0, 0, 0);
System.DateTime answer = today.Add(duration);
outputBlock.Text += String.Format("{0:dddd}", answer) + "\n";

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.

See Also

Reference