API for Windows Mobile synchronization

I"m wondering how it would be possible to synchronize desktop and mobile application.

For example a note taking appl开发者_运维知识库ication in desktop and mobile version on both of them command Sync - how this could be implemented any API reference or tutorial?

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You're probably after what's called an "ActiveSync Service Provider". Microsoft ships a sample implementation with all of the PocketPC/WinMo SDKs called "StockPor".