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https://issues.apache.org/jira/browse/LOG4NET-316?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13158539#comment-13158539
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Roy Chastain commented on LOG4NET-316:
--------------------------------------
Honestly, I do not know. I asked about this feature some time back and Ron G.
suggested this approach.
> Provide a Layout Pattern that is re-evaluated on each use
> ---------------------------------------------------------
>
> Key: LOG4NET-316
> URL: https://issues.apache.org/jira/browse/LOG4NET-316
> Project: Log4net
> Issue Type: Improvement
> Components: Other
> Affects Versions: 1.2.11
> Reporter: Roy Chastain
> Priority: Minor
> Labels: features
> Attachments: DynamicPatternLayout.cs
>
>
> The DynamicPatternLayout is a layout pattern that is re-evaluated on each
> use. It is appropriate to use instead of LayoutPattern to provide dynamic
> strings in headers and footers for appenders. Datetime is an example. Using
> the standard layout pattern results in the same datetime in each header and
> footer, while using DynamicPatternLayout results in timestamp of the
> header/footer creation.
> Example
> <layout type="log4net.Layout.DynamicPatternLayout">
> <param name="Header" value="%newline**** Trace Opened Local:
> %date{yyyy-MM-dd HH:mm:ss.fff} UTC: %utcdate{yyyy-MM-dd HH:mm:ss.fff}
> ****%newline"/>
> <param name="Footer" value="**** Trace Closed %date{yyyy-MM-dd
> HH:mm:ss.fff} ****%newline"/>
> </layout>
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