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From "Simon Wallis" <mail...@wallis.ca>
Subject logging additional fields
Date Wed, 08 Dec 2004 22:02:39 GMT

In regards to the following thread, where can I see the source code for the EventId extension?
I can find the example code where it is used, but where is the implementation? I would like
to write a similar extension to log4net.


From: http://sourceforge.net/mailarchive/message.php?msg_id=7162681

-----Original Message-----
From: Nicko Cadell <nicko@ne...>
RE: ADONetAppender  
2004-01-19 05:39

 There are two distinct steps here:
 1 Get the additional logging fields into log4net
 2 Writing the additional fields into the database
 1 Get the additional logging fields into log4net
 To do this properly you will need to write what is called an extension. This
 is a wrapper around log4net that exposes a different interface. The best
 example for you is the EventID extension (see
 log4net\extensions\net\1.0\log4net.Ext.EventID). This extension allows you
 to pass an event id to log4net. The extension stores the event id in an
 event specific property map. You should put your additional fields into this
 2 Writing the additional fields into the database
 The ADONetAppender can be configured to write any named property into the
 database using the following configuration for the parameter:
 <param name="Parameter">
   <param name="ParameterName" value="@log_my_field" />
   <param name="DbType" value="String" />
   <param name="Size" value="255" />
   <param name="Layout" type="log4net.Layout.RawPropertyLayout">
     <param name="Key" value="MyField" />
 The value of the property may be any object type that is accepted by the
 IDbDataParameter for the DbType specified.
 > -----Original Message-----
 > From: Sloan Seaman [mailto:sloan@sg...] 
 > Sent: 16 January 2004 15:48
 > To: log4net-users@li...
 > Subject: [Log4net-users] ADONetAppender
 > I"ve got an app that I wish to have log to a SQL Server instance.
 > Using the examples in the docs it works fine.   I need to be 
 > able to record
 > some other information into seperate db fields though.
 > Basically I"m rewriting an existing app and want to use 
 > log4net but the current app has fields like "method" in the log table.
 > The current app calls the proprietary logging system and 
 > passes the method name along with the description string.
 > How would I pull this off in log4net?
 > Thanks!
 > --
 > Sloan

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