为dll请求的执行级别

I've got a WinForms application that I am working on. There is one small piece of functionality that needs to be run as an administrator in Vista/Win7. I understand how I can set the requestedExecutionLevel for the application in the manifest. The trick is, I don't want to require the user to run the entire application as an administrator, just one part of it. So I would like to have most of the functionality run asInvoker.I've got a WinForms application that I am worki