I chose the second option (as I am already using DOMConfigurator) and it worked beautifully. I added your SetTextBox() and GetAppenders() methods to my TextBoxAppender, so all the code has to do is call TextBoxAppender.SetTextBox(myTextBox).
Thanks very much for your time. -----Original Message----- From: Nicko Cadell [mailto:[EMAIL PROTECTED] Sent: Wednesday, October 20, 2004 2:06 PM To: Log4NET User Subject: RE: TextBoxAppender Either your TextBoxAppender would have to lookup the TextBox to write to, i.e. make the TextBox into a singleton that the appender can lookup by referencing a static field. Or something else has to tell the appender about the TextBox to use. This depends on how you want to configure log4net. If you use the BasicConfigurator you can do something like: log4net.Config.BasicConfigurator.Configure(new TextBoxAppender(MyTextBox)); If you want to use the DOMConfigurator to do the configuration your appender will need to have a default constructor so that the configurator can create it. After log4net has loaded the configuration you can find your appender and set the TextBox to use. public static void SetTextBox(TextBox tb) { foreach(log4net.Appender.IAppender appender in GetAppenders()) { if (appender is TextBoxAppender) { ((TextBoxAppender)appender).TextBox = tb; } } } public static log4net.Appender.IAppender[] GetAppenders() { ArrayList appenders = new ArrayList(); appenders.AddRange(((log4net.Repository.Hierarchy.Hierarchy)log4net.LogM anager.GetLoggerRepository()).Root.Appenders); foreach(log4net.ILog log in log4net.LogManager.GetCurrentLoggers()) { appenders.AddRange(((log4net.Repository.Hierarchy.Logger)log.Logger).App enders); } return (log4net.Appender.IAppender[])appenders.ToArray(typeof(log4net.Appender. IAppender)); } Hope that helps, Nicko > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] > Sent: 19 October 2004 19:39 > To: [email protected] > Subject: TextBoxAppender > > I'd like to have log4net append messages to a TextBox > control. I have subclassed AppenderSkeleton into a > TextBoxAppender class, but don't know how to pass it an > instance of TextBox to append to. > > I found this same question posted on the old sourceforge list > with no responses, so I'm asking again. (If anyone has > examples of doing similar things with other controls I could > just work from there). > > Here is my simple TextBoxAppender class: > > public class TextBoxAppender : AppenderSkeleton > { > > private System.Windows.Forms.TextBox _textBox; > > public > TextBoxAppender(System.Windows.Forms.TextBox TextBox) > { > _textBox = TextBox; > } > > protected override void Append > (log4net.spi.LoggingEvent LoggingEvent) > { > > _textBox.AppendText(LoggingEvent.RenderedMessage); > } > > } > > >
