public void Debug(string info)
{
DemoEventArgs eventArgs = new DemoEventArgs(info);
if (DebugEvent != null)
{
DebugEvent(this, eventArgs);
}
}
//步骤5，定义事件处理方法
void MyEvent(object sender, DemoEventArgs e)
{
Console.WriteLine(id + " received this message: {0}", e.Message);
}