log4net log4mongo config

mongo_appender.config.xml

<?xml version="1.0"?>
<log4net>
  <appender name="MongoDBAppender" type="Log4Mongo.MongoDBAppender, Log4Mongo">
    <connectionString value="mongodb://localhost" />
    <collectionName value="logs" />
    <field>
      <name value="timestamp" />
      <layout type="log4net.Layout.RawTimeStampLayout" />
    </field>
    <field>
      <name value="level" />
      <layout type="log4net.Layout.PatternLayout" value="%level" />
    </field>
    <field>
      <name value="thread" />
      <layout type="log4net.Layout.PatternLayout" value="%thread" />
    </field>
    <field>
      <name value="logger" />
      <layout type="log4net.Layout.PatternLayout" value="%logger" />
    </field>
    <field>
      <name value="message" />
      <layout type="log4net.Layout.PatternLayout" value="%message" />
    </field>
  </appender>
  <root>
    <!-- OFF, FATAL, ERROR, WARN, DEBUG, INFO, ALL -->
    <level value="ALL" />
    <appender-ref ref="MongoDBAppender" />
  </root>
</log4net>