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Asked: 2026-05-26T05:59:06+00:00

I upgraded a .NET 2.0 Winform Application build with VS2005 to .NET 3.5 SP1.

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I upgraded a .NET 2.0 Winform Application build with VS2005 to .NET 3.5 SP1. build by VS 2008

The application had a memory leak in .NET 2.0 caused by a ToolStripControl that was referenced by a UserPreferenceChangedEventHandler.

Upgrading to .NET 3.5 fixed the issue. I still have a problem with DataGridViews.

They are also referenced by a UserPreferenceChangedEventHandler.

Are there some common problems with DataGridViews that prevent forms containing them not being recycled by the garbage collector?

Instance Retention Graph

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1 Answer

  1. Editorial Team

    For anything implementing IDisposable you should call Dispose(). DataGridView is one of those… which in turn ensures that it unregisters the static event handler you mention…

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