System Namespace   DateTime Structure

Adds the specified number of days to the value of this instance.

[ VB ]
<Serializable>
Public Function AddDays ( _
   ByVal value As Double _
} As DateTime

[ C# ]
[ Serializable ]
public DateTime AddDays (
   double value
};

[ C++ ]
[ Serializable ]
public: DateTime AddDays (
   double value
};

[ JScript ]
public Serializable
function AddDays (
   value : double
} : DateTime;

value

A number of whole and fractional days. The value parameter can be negative or positive.

A DateTime whose value is the sum of the date and time represented by this instance and the number of days represented by value.

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 day. For example, 4.5 is equivalent to 4 days, 12 hours, 0 minutes, 0 seconds, 0 milliseconds, and 0 ticks.

The value parameter is rounded to the nearest tick.

The below code snippet demonstrates using the AddDays method.

// calculate what day of the week is 36 days from this instant.
System.DateTime today = System.DateTime.Now;
System.DateTime answer = today.AddDays ( 36 );
System.Response.WriteLine ( "{ 0:dddd }", answer );

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

today = System.DateTime.Now
answer = today.AddDays ( 36 )

System.Response.WriteLine ( "{ 0:dddd }", answer )

DateTime Members   Double