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XML Logging in the .NET Framework

This was originally going to be some guideline instructions for a CodePlex project, Essential.Diagnostics that I work on, but it ended up being more an opinion piece so I thought it would fit better on a blog.

There are several trace listeners (loggers) in the .NET Framework that can produce XML output. Outputting to XML results in more complex (verbose) files than, say, a simple text file output, but usually has the benefit of being better processed by tools, correlated across tiers, etc.

There are three main XML listeners, plus one extension in Essential.Diagnostics:

  • XmlWriterTraceListener
  • RollingXmlTraceListener (in Essential.Diagnostics)
  • EventSchemaTraceListener (in System.Core)
  • EventProviderTraceListener (in System.Core)

Examples of how to configure and use each one (used to produce the output below) is provided in the Essential.Diagnostics project.
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