C＃，试图检测列表的开始/结束状态 [英] C#, trying to detect start/end states of a list

问题描述

解决。答案解释了一切。



编辑：对不起。我不是故意删除所有内容。请将帖子恢复到原来的状态，以便将来的帖子可以提供帮助。



我尝试了什么：

Resolved. Answer explains everything.

I am sorry. I didn't mean to delete everything. Please revert the post back to its original state for future people who the post may help.

What I have tried:

Resolved. Answer explains everything.

推荐答案

只需添加到您的DisplayPerson方法：

Just add to your DisplayPerson method:

buttonPrevious.Enabled = birthdays.IsPerviousPerson();
buttonNext.Enabled = birthdays.IsNextPerson();

但是......我会使用属性而不是方法：

But ... I'd use properties instead of methods:

public bool HasNextPerson
        {
            get {return currentPerson < (people.Count - 1);}
        }
 
        public bool HasPreviousPerson
        {
            get {return currentPerson > 0;}
        }

然后说：

And then say:

buttonPrevious.Enabled = birthdays.HasPerviousPerson;
buttonNext.Enabled = birthdays.HasNextPerson;

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