Can you pull the connectionString for a log4net AdoNetAppender from elsewhere in a web.config file?

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It is possible to use a DB connection string specified in web.config without creating a new class, though you would need to use log4net build that hasn’t been released yet. It can be downloaded from SVN repository http://svn.apache.org/viewvc/logging/log4net/trunk/

Your config will look as follows:

<connectionStrings>
    <add name="connStr" connectionString="Data Source=localhost; ..." />
</connectionStrings>

<log4net>
    <appender name="AdoNetAppender" type="log4net.Appender.AdoNetAppender">
    <connectionType value="System.Data.SqlClient.SqlConnection, System.Data, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" />
    <connectionStringName value="connStr" />
      ...
</log4net>

Please note that connectionType still needs to be specified.

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