C# folder sync library

Question

I'm looking for an easy to use library/algorithm that can sync two folders locally (one-way or two-way)

Answer 1

Take a look at the Microsoft Sync Framework.

There is a guide for syncing files at How to: Synchronize Files by Using Managed Code.

Answer 2

Here is one of many examples available by googling "C# Folder Sync"

Real Time Folder Synchronization Window Service