Log4net, how to log a verbose message?

Question

I can log info messages without a problem, but can\'t figure out how to log verbose messages. Any help would be welcomed.

My problem is:

loggingEvent.Level

Answer 1

Apache log4net has the following log levels:

DEBUG < INFO < WARN < ERROR < FATAL

For messages considered more verbose than informational messages (INFO), the DEBUG level is the option to go for. Writing debug messages should be as simple as:

myLog.Debug("This is a pretty verbose message");

If you write extremely many debug messages and/or the messages are costly to produce (eg involves heavy string concatenation), consider adding a conditional around the logging:

if (myLog.IsDebugEnabled)
{
    myLog.Debug("This is a pretty verbose message");
}

If you find yourself doing this often and want to DRY up your code, consider using extension methods for deferred message formatting, which will turn the above statement into this:

Log.Debug( () => "This is a pretty verbose message" );