Nubzilo

<Menu.CommandBindings>
<CommandBinding Command="Copy" CanExecute="CommandBinding_OnCanExecute"></CommandBinding>
</Menu.CommandBindings>

<MenuItem Header="Edit" >
<MenuItem Header="Copy" Command="Copy"></MenuItem>
</MenuItem>

private void CommandBinding_OnCanExecute(object sender, CanExecuteRoutedEventArgs e)
{
e.CanExecute = false;
e.Handled = true;
}

if (StateChanged != null)
 StateChanged();

void Main()
{
	List<IDriving> transports = new List<IDriving>();
	transports.Add(new Car());
	transports.Add(new Boat());
	foreach (IDriving transport in transports)
	{
		transport.MoveForward();
		transport.MoveBack();
	}
}

// Define other methods and classes here
public interface IDriving 
{
	void MoveForward();
	void MoveBack();
}

public class Car : IDriving
{
	public void MoveForward()
	{
		Console.WriteLine ("Car move forward");
	}
	public void MoveBack()
	{
		Console.WriteLine ("Car move back");
	}
}

public class Boat : IDriving
{
	public void MoveForward()
	{
		Console.WriteLine ("Boat move forward");
	}
	public void MoveBack()
	{
		Console.WriteLine ("Boat move back");
	}
}