我正在尝试学习在C#中引发和处理事件。

这是我的简单示例:

///////////////  creating a new BALL object ///
ballClass ball = new ballClass();

void button1_Click(object sender, EventArgs e)
{
    // this should make the BALL object raise an event
    ball.onHit();
    label1.Text = "EVENT SEND";
}

// when event is fired, label text should change
void BallInPlayEvent(object sender, EventArgs e)
{
    label2.Text = "EVENT FOUND!";
}


和球类:

class ballClass
{
    public event EventHandler BallInPlay;

    public void onHit()
    {
        this.BallInPlay ///// ??? how should i raise this event?
    }
}


在电话中,我无法真正理解,该如何发起活动?有任何想法吗?... :)

谢谢!

最佳答案

public void onHit()
{
   if(BallInPlay != null)
     BallInPlay(this, new EventArgs());
}

关于c# - C#事件,如何引发它们?,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/4818824/

10-15 09:47