一、简单的自定义事件(1)：无参数
namespace UserInputMonitor
{
class UserInputMonitor
{
public delegate void UserRequest(object sender, EventArgs e);
//定义委托
public event UserRequest OnUserRequest;
//此委托类型类型的事件
public void Run()
{
bool finished = false;
do
{
if (Console.ReadLine() == "h")
{
OnUserRequest(this, new EventArgs());
}
else if (Console.ReadLine() == "e")
{
finished = true;
}
} while (!finished);
}
}
public class Client
{
public static void Main()
{
UserInputMonitor monitor = new UserInputMonitor();
new Client(monitor);
monitor.Run();
}
private void ShowMessage(object sender, EventArgs e)
{
Console.WriteLine("HaHa!!");
}
Client(UserInputMonitor m)
{
m.OnUserRequest += new UserInputMonitor.UserRequest(this.ShowMessage);
//m.OnUserRequest+=new m.UserRequest(this.ShowMessage);
//注意这种写法是错误的，因为委托是静态的
}
}
}
二、简单的自定义事件(2):包含参数
class MyEventArgs:EventArgs
{
private string keyChars;
public MyEventArgs(string keyChars)
{
this.keyChars = keyChars;
}
public string KeyChars
{
get
{
return keyChars;
}
}
}
class UserInputMonitor
{
//定义委托
public delegate void UserRequest(object sender,MyEventArgs e);
//此委托类型类型的事件，用户累加客户端事件
public event UserRequest OnUserRequest;
public void Run() //定义此事件激发的条件
{
bool finished=false;
do
{
string inputString= Console.ReadLine();
if (inputString != "")
OnUserRequest(this, new MyEventArgs(inputString));
else
finished = true;
}while(!finished);
}
}
public class Client
{
public static void Main()
{
UserInputMonitor monitor=new UserInputMonitor();
new Client(monitor);
monitor.Run();
}
private void ShowMessage(object sender,MyEventArgs e)
{
Console.WriteLine("捕捉到：{0}",e.KeyChars);
}
Client(UserInputMonitor m)
{
m.OnUserRequest+=new UserInputMonitor.UserRequest(this.ShowMessage);
//m.OnUserRequest+=new m.UserRequest(this.ShowMessage);
//注意这种写法是错误的，因为委托是静态的
}
}