有没有办法找出单个选择windows.forms.listbox的可视区域中的项目 [英] Is there a way to find out what item is in the viewable area of a single selection windows.forms.listbox

问题描述

我的表单上有一个Windows.Forms.ListBox，它的SelectionMod为1。我试图找出用户在列表框中向上或向下滚动的时间，但是如果我可以捕获该可见值，则不会选择可见的条目。有没有办法做到这一点。谢谢。



我尝试了什么：



我试过了创建一个Control.ListBoxItem，设置它的Content的值，然后将其添加到ListBox中的Items。 ListBoxItems有一个我希望使用的isVisible属性，但是没有用。

I have a Windows.Forms.ListBox on my form, it has a SelectionMod of one. I'm trying to find out when a user scrolls up or down on the listbox, but doesn't select the entry that's visible, if I can capture that visible value or not. is there a way to do this. Thanks.

What I have tried:

I've tried creating a Control.ListBoxItem, setting a value of it's Content, and then adding that to the Items in the ListBox. The ListBoxItems have an isVisible property that I was hoping to use, but that didn't work.

推荐答案

你想要的属性是 TopIndex 。请参阅 ListBox类（System.Windows.Forms） [ ^ ]

The property you want is TopIndex. See ListBox Class (System.Windows.Forms)[^]

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