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List:       log4net-user
Subject:    Writing custom errormessages
From:       "Ivar Kvanum Sund" <ivar.sund () itsolutions ! no>
Date:       2004-06-11 9:13:30
Message-ID: NEEDIAEGKHHCEALIFDBLEEBKCDAA.ivar.sund () itsolutions ! no
[Download RAW message or body]

Hi.

I have subclassed the LayoutSkeleton class successfully so that I can format
my own custom log information.

Is there any way to get the exception object? I see that it is stored in the
LoggingEvent as m_thrownException, but it is not accessable. I need this
object to be able to retrieve properties within the exception, without
touching the Message property.
I have attaced a small example, but if there are other better ways of doing
this, please let me know.


Example:
class TestException : ApplicationException
{
	private string myProperty1;
	private string myProperty2;

	public TestException( string message, string myProperty1, string
myProperty2 ) : base(message)
	{
		this.myProperty1 = myProperty1;
		this.myProperty2 = myProperty2;
	}
}

class CustomLayout : LayoutSkeleton
{
	...
	public override string Format( log4net.spi.LoggingEvent loggingEvent )
	{
		StringBuilder msg = new StringBuilder();
		...
		if ( exception is TestException )
		{
			msg.Append( "MyProperty1: " + exception.MyProperty1 );
			msg.Append( "MyProperty2: " + exception.MyProperty2 );
		}
		...
		return msg.ToString();
	}
}





Best regards

Ivar Kvanum Sund
Software Engineer

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