How to check last added item is a folder or not in Sharepoint event receiver

Question

Inside my ItemAdded function I want to check the last added item is a folde or not. How to check that.

Answer 1

public class ClassName : SPItemEventReceiver
{
    public override void ItemAdded(SPItemEventProperties properties)
    {
        bool isFolder = (properties.ListItem.Folder != null);
    }
}