//移除功能鍵
 public void RemoveKey(Key key)
 {
     for (int i = 0; i < _keys.Count; i++)
     {
         if (_keys[i].GetKeyName() == key.GetKeyName())
             _keys.RemoveAt(i);
     }
 }
 public bool IsKeyExist(Key key)
 {
     return _keys.Exists(item => item.GetKeyName() == key.GetKeyName());
 }