摘要：
首先要添加引用输入输出包using System.IO;StreamReadersr = File.OpenText(fileName);string str = sr.ReadLine(); 阅读全文
摘要：
public class Manage{//声明委托public delegate void EventHandler(string a);//声明事件public event EventHandler Change;public void RaiseEvent(string a){Change(a);}}public class Action{public staticvoid doA(){Co... 阅读全文