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Editorial Team
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Asked: 2026-05-26T08:31:44+00:00

I was just reading this article, Garbage Collection: Automatic Memory Management in the Microsoft

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I was just reading this article,
“Garbage Collection: Automatic Memory Management in the Microsoft .NET Framework”, by Jeffrey Richter, and I couldn’t think of any real life sample for using ReRegisterForFinalize or SuppressFinalize.

Could anyone provide me with some examples?

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  1. Editorial Team

    A handful of places it gets used in the .NET framework, always a good place to look. Basic patterns are:

    • a disposed object gets reused. The Dispose() method has called SuppressFinalize so it needs to be re-registered (NativeWindow, RequestContextBase, TaskExceptionHolder class)
    • the finalizer failed and caught an exception. Little to do but to retry later. That code is wrapped with if (!Environment.HasShutdownStarted && !AppDomain.CurrentDomain.IsFinalizingForUnload()) to make sure that doing this makes sense (DynamicResolver and LoaderAllocatorScout class)
    • the object participates in a caching scheme and gets re-cached (OverlappedData class)
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