This article describes the known issues for the ADODB Primary Interop Assembly (PIA) that is included with Microsoft Visual Studio 2005. Major differences exist between garbage collection in Visual Basic 6.0 and in Visual Basic .NET. The primary difference is that Visual Basic 6.0 garbage collection is more aggressive than Visual Basic .NET garbage collection. With Visual Basic 6.0, as soon as an object instance falls out of scope, the object is immediately released. The same behavior does not occur with Visual Basic .NET or with ordinary .NET garbage collection. With .NET garbage collection, objects are released asynchronously. This difference in garbage collection can have a large effect on your data access code when you move from Visual Basic 6.0 to Visual Basic .NET.
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