private void ExecuteExample4()
{
if (myExample4CommandTextIndex == 0)
Example4Randomizer = new RandomIntGenerator ();
else if (myExample4CommandTextIndex == 1)
Example4Randomizer.Randomize ();
else if (myExample4CommandTextIndex == 2)
Example4Randomizer = null;
Example4CommandTextIndex = (Example4CommandTextIndex + 1) % s_Example4CommandText.Length;
}