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copied!<p>After some procrastination I finally set about coding a solution to my original issue.</p> <p>My solution uses a custom <code>TraceListener</code> (originally suggested by John) that logs to an output window. The output window is automatically displayed and bought to the foreground when an error occurs.</p> <p>Here is my <code>TraceListener</code>:</p> <pre><code>public class ErrorLogTraceListener : TraceListener { public override void Write(string message) { ... } public override void WriteLine(string message) { ... } } </code></pre> <p><code>TraceListener</code> is defined in System.Diagnostics.</p> <p>The custom <code>TraceListener</code> must be hooked into the system to be used. The official way to do this is to set something in the registry and then use the <code>App.config</code> file to configure the <code>TraceListener</code>. </p> <p>However I found that there is a much easier way to do this programmatically:</p> <pre><code>ErrorLogTraceListener listener = new ErrorLogTraceListener(); PresentationTraceSources.Refresh(); PresentationTraceSources.DataBindingSource.Listeners.Add(listener); PresentationTraceSources.DataBindingSource.Switch.Level = SourceLevels.Error; </code></pre> <p><code>PresentationTraceSources</code> is also defined in <code>System.Diagnostics</code>.</p> <p>For more information on trace sources see Mike Hillberg's <a href="http://blogs.msdn.com/mikehillberg/archive/2006/09/14/WpfTraceSources.aspx" rel="nofollow noreferrer">blog</a>.</p> <p>Bea Stollnitz has some useful info on her <a href="http://www.beacosta.com/blog/?p=52" rel="nofollow noreferrer">blog</a>.</p>

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