public void OnBallInPlay(BallEventArgs e)
{
EventHandler ballInPlay = BallInPlay;
if (ballInPlay != null)
{
ballInPlay(this, e);
}
}
static void Main1(string[] args)
{
Ball ball = new Ball();
Pitcher pitcher = new Pitcher(ball);
BallEventArgs ballEventArgs = new BallEventArgs(45, 100);
ball.OnBallInPlay(ballEventArgs);
}