Hi
you instantiate it only in one of the constructors. I can't imagine
how that would work.
Cheers,
D.
2012/11/3 BlackMatrix <primusla...@web.de>:
>
> Hi.
>
> Ich have written a ListViewAppender to bind my log messages to a WPF
> listview control.
>
> Always when I write a log message my application jumps to the
>
> protected override void Append(LoggingEvent LoggingEvent)
>
> method of my ListViewAppender, but the _listView is after initialization
> always null.
>
> public partial class MainWindow : Window
> {
> private static readonly ILog log =
> LogManager.GetLogger(typeof(MainWindow));
>
> public MainWindow()
> {
> InitializeComponent();
>
> ListViewAppender listViewAppender = new
> ListViewAppender(listView);
>
> log.Error("Error.");
> }
> }
>
> public class ListViewAppender : AppenderSkeleton
> {
> private ListView _listView;
>
> public ListViewAppender()
> : base()
> {
>
> }
>
> public ListViewAppender(ListView listview)
> : base()
> {
> _listView = listview;
> }
>
> private delegate void UpdateControlDelegate(LoggingEvent
> loggingEvent);
>
> private void UpdateControl(LoggingEvent loggingEvent)
> {
> // ...
> }
>
> protected override void Append(LoggingEvent LoggingEvent)
> {
> if (!_listView.Dispatcher.CheckAccess())// !!! _listView == null
> _listView.Dispatcher.Invoke(new
> UpdateControlDelegate(UpdateControl), new object[] { LoggingEvent });
> else
> UpdateControl(LoggingEvent);
> }
>
> XML-Code:
> <log4net debug="true">
> <appender name="ListViewAppender" type="WpfApplication2.ListViewAppender">
> <layout type="log4net.Layout.PatternLayout">
> <conversionPattern value="%date [%thread] %-5level %logger
> [%property{NDC}] - %message%newline" />
> </layout>
> </appender>
>
> <root>
> <level value="ALL"/>
> <appender-ref ref="ListViewAppender" />
> </root>
> </log4net>
>
> C#-Code:
>
> --
> View this message in context:
> http://old.nabble.com/ListViewAppender%3A-ListView-always-null--tp34636403p34636403.html
> Sent from the Log4net - Users mailing list archive at Nabble.com.
>
--
Dominik Psenner
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