Trace target

Sends log messages through System.Diagnostics.Trace.

Platforms Supported: Limited (Not available for NetStandard1.3)

Configuration Syntax

<targets>
  <target xsi:type="Trace" name="String" layout="Layout" />
</targets>

Parameters

General Options

• name - Name of the target.

Output Options

• layout - Layout used to format log messages. Layout Required. Default: ${longdate}|${level:uppercase=true}|${logger}|${message:withexception=true}
• rawWrite - Always use Trace.WriteLine independent of LogLevel. Default: False

  Introduced with NLog 4.5, fixes the issue with output being prefixed with exe-filename.

• EnableTraceFail - Use Trace.Fail for LogLevel.Fatal, instead of Trace.Error. Default: 'False'

  Introduced with NLog 4.7, avoids Enviroment.FailFast that can happen for default trace listener.

• header - Layout used to format header-output when initializing. Layout

  Introduced with NLog 5.0

• footer - Layout used to format footer-output when closing. Layout

  Introduced with NLog 5.0

Notes

Alternative targets for diagnostic output:

• DebugSystem-target for output to System.Diagnostics.Debug
• Debugger-target for output to System.Diagnostics.Debugger.Log
• OutputDebugString-target for output to OutputDebugString Win32 API