public
interface
greeting
...
{
void SayHello();
}
public
class
firstGreeting:greeting
...
{
greeting 成员#region greeting 成员 public void SayHello() ...{ MessageBox.Show("这是我的第一个版本");
} #endregion }
public
interface
NeedModify:greeting
...
{ void SetPreviousGeeting(greeting pregreet); void SayGoodbye(); }
public
class
SecondGreeting:NeedModify
...
{ private greeting pre_greeting; NeedModify 成员#region NeedModify 成员 public void SetPreviousGeeting(greeting pregreet) ...{ pre_greeting=pregreet; } public void SayGoodbye() ...{ MessageBox.Show("您好,再见"); } #endregion greeting 成员#region greeting 成员 public void SayHello() ...{ MessageBox.Show("这是我的第二个版本的你好"); this.SayGoodbye(); } #endregion }
public
class
GreetingInEnglish:NeedModify
...
{ private greeting pre_greeting; NeedModify 成员#region NeedModify 成员 public void SetPreviousGeeting(greeting pregreet) ...{ pre_greeting=pregreet; } public void SayGoodbye() ...{ MessageBox.Show("这是英语的说再见"); } #endregion greeting 成员#region greeting 成员 public void SayHello() ...{ pre_greeting.SayHello(); this.SayGoodbye(); } #endregion }
