log4net SDK Reference |

# RollingFileAppender.MaximumFileSize Property

Gets or sets the maximum size that the output file is allowed to reach before being rolled over to backup files.

[Visual Basic]
Public Property MaximumFileSize As String
[C#]
public string MaximumFileSize {get; set;}

#### Property Value

The maximum size that the output file is allowed to reach before being rolled over to backup files.

#### Remarks

This property allows you to specify the maximum size with the suffixes "KB", "MB" or "GB" so that the size is interpreted being expressed respectively in kilobytes, megabytes or gigabytes.

For example, the value "10KB" will be interpreted as 10240 bytes.

The default maximum file size is 10MB.

If you have the option to set the maximum file size programmatically consider using the MaxFileSize property instead as this allows you to set the size in bytes as a Int64.

#### See Also

RollingFileAppender Class | log4net.Appender Namespace