How to get items from folders and sub-folders in a SharePoint 2010 list using C# server object model

Hi,

I want to get all items from a SharePoint 2010  list (having folders and sub-folders in it) using C# and Server object model.

I can get  the items from the lists without having any folders but unable to get items from the folders and sub-folders present in the list.

Kindly help with some code.