Last week I went to San Francisco to take a dive off the deep end into the new XML file formats in Microsoft Office 2007. The training was hosted by MindJet, and presented by Doug Mahugh of Microsoft, and Chris Predeek, a consultant who put together the code samples for the hands-on labs.

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At work we had a long-running .NET process whose memory usage seemed to be going up, but not coming down. In investigating, I learned a few things about leak hunting, and ultimately tracked down perhaps the most insidious leak I’ve ever seen.

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The .NET XML serialization support is pretty cool — I’ve used it for a few projects now. It provides an easy way to convert objects with properties to and from XML. The implementation dynamically generates a serialization assembly to do this at runtime, so a recommended strategy for improving runtime performance is to generate your serialization assemblies in advance using the XML Serializer Generator Tool (Sgen.exe).

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