log4net SDK Reference |

# RollingFileAppender.NextCheckDate Method

Get the start time of the next window for the current rollpoint

[Visual Basic]
Protected Function NextCheckDate( _
ByVal currentDateTime As Date, _
ByVal rollPoint As RollPoint _
) As Date
[C#]
protected DateTime NextCheckDate(
DateTime currentDateTime,
RollPoint rollPoint
);

#### Parameters

currentDateTime
  the current date
rollPoint
  the type of roll point we are working with

#### Return Value

the start time for the next roll point an interval after the currentDateTime date

#### Remarks

Returns the date of the next roll point after the currentDateTime date passed to the method.

The basic strategy is to subtract the time parts that are less significant than the rollpoint from the current time. This should roll the time back to the start of the time window for the current rollpoint. Then we add 1 window worth of time and get the start time of the next window for the rollpoint.

#### See Also

RollingFileAppender Class | log4net.Appender Namespace