今天又是考试时间了,大家来考试了,第一题,答对有奖呀 - 中国WEB开发者网络 (http://www.webasp.net) -- 技术教程 (http://www.webasp.net/article/) --- 今天又是考试时间了,大家来考试了,第一题,答对有奖呀 (http://www.webasp.net/article/6/5591.htm) |
| -- 作者:未知 -- 发布日期: 2003-07-12 |
| 1.以下程序中有没有错误?如果有,请说明错误发生的前提以及现象:) public class FlyBird { private static FlyBird bird; public static FlyBird getBird() { if(bird==null) bird=new FlyBird(); return bird; } public event FlyEventHandler OnFly; public void OnFlyEvent(string m) { this.OnFly(this,new FlyEventArgs(m)); } public void StartFly() { this.OnFlyEvent("正在起飞..."); .... } public void PauseFly() { this.OnFlyEvent("暂停飞行..."); ... } public void Cookie() { this.OnFlyEvent("回家做饭:)。。。"): .... } public void InLove() { this.OnFlyEvent("恋爱中..."); } public FlyBird() { } public delegate void FlyEventHandler(object,FlyEventArgs); } public class FlyEventArgs:EventArgs { private string status; public string Status { get { return status; } } public FlyEventArgs(string m):base() { this.status=m; } } |
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