Actions as parameters

In most case actions are useful method parameters. Consider that you should execute some code in transaction. You can do like this:

With.Transaction(() => {
    // some code
});

Transaction is a static method of With class:

public class With
{
    public static void Transaction(Action<T> action)
    {
        using (Transaction t = new Transaction())
        {
            action();
            t.Complete();
        }
    }
}

Whit method can be reused and can be overloaded with collection of actions or/and action with different paramters