log4net SDK Reference |

# RollingFileAppender.RollOverSize Method

Implements file roll base on file size.

[Visual Basic]
Protected Sub RollOverSize()
[C#]
protected void RollOverSize();

#### Remarks

If the maximum number of size based backups is reached (`curSizeRollBackups == maxSizeRollBackups`) then the oldest file is deleted -- its index determined by the sign of countDirection. If `countDirection` < 0, then files {`File.1`, ..., `File.curSizeRollBackups -1`} are renamed to {`File.2`, ..., `File.curSizeRollBackups`}. Moreover, `File` is renamed `File.1` and closed.

A new file is created to receive further log output.

If `maxSizeRollBackups` is equal to zero, then the `File` is truncated with no backup files created.

If `maxSizeRollBackups` < 0, then `File` is renamed if needed and no files are deleted.

#### See Also

RollingFileAppender Class | log4net.Appender Namespace