Component based architecture: Replacing an assembly at runtime

Is it a good idea to repla开发者_开发问答ce an assembly at runtime? What problems can I encounter?

Original question: StructureMap - Ability to replace an assembly at runtime

What is the difference in replacing an assembly at runtime within a web- and a non-web application?

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The difference is that IIS creates a new shadow copy each time you update a DLL. Hence you get a new AppDomain automatically when you add the new DLL.

WinForms etc doesn't do that magic for you and that's why it won't work.

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If the code that runs against that assembly runs in a separate AppDomain and that you shut down the appdomain before doing the operation, you should have no problem.