Code reuse in .NET

I'm relatively new to .NET... our company has used VB6 to create various DLLs that can be shared among our internal apps. Beyond code reuse, the advantage is that when a minor bug is fixed in a component and the component is released, the fix is immediately available to programs which use that particular DLL.

Is there anything analogous to this in .NET? I know .NET provides for COM interoperability. However, for new development, we don't want to create new components in VB6 to be used with .NET. But, we would like programs which share code to be easily updated when bugs are discovered.

Any info would be appreciated.

Thanks

umm yeah. Dll's

Actually its even better than that in .NET because the same principal applies to Inheritance. You could have several classes in different dlls based on a base class. If a bug creeps up in the base, effecting all derived classes then you can fix the base and it fixes all of them.