EventContext layout renderer

Xharze edited this page Oct 3, 2012 · 1 revision
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Log event context data.

Supported in .NET, Silverlight, Compact Framework and Mono

Configuration Syntax

${event-context:item=String}

Parameters

Rendering Options

  • item - Name of the item. Required.

Example

In C# class, create an event and add an element to the Properties dictionary (or the deprecated Context dictionary):

...
Logger log = LogManager.GetCurrentClassLogger();
LogEventInfo theEvent = new LogEventInfo(LogLevel.Debug, "", "Pass my custom value");
theEvent.Properties["MyValue"] = "My custom string";
// deprecated
theEvent.Context["TheAnswer"] = 42;
log.Log(theEvent);
...

and in your NLog.config file:

${event-context:item=MyValue} -- renders "My custom string"
${event-context:item=TheAnswer} -- renders "42"