如何阻止光标从pressing＆QUOT列表视图外移动;向下键＆QUOT;如果在最后一个项目 [英] How to stop cursor to move outside from the listview on pressing "Down Key" if its on last item

问题描述

在我的WPF项目我有一个列表视图，上pressing向下键上的焦点已经转移到了垂直滚动条，这是错误的在我的案件的向下按钮的最后一个项目，我想忽略在最后一个项目keydown事件，所以当用户preSS了按钮，它就会跳到第二个最后一个项目里面的ListView。

In my WPF project i've a listview, on pressing down key on the last item the focus has been shifted to the down button of the vertical scrollbar, which is wrong in my case, i want to ignore the keydown event on the last item so when user press up button it will jump to the 2nd last item inside listview.

我已经通过将低于code里面lvTender_ previewKeyDown + lvTender_KeyDown试过了，code正在执行上的keydown的最后一个项目，但事件不会取消。

i've tried by putting below code inside lvTender_PreviewKeyDown + lvTender_KeyDown, the code is executing on the last item keydown but the event is not cancelling.

如果e.Key = Key.Down然后
    如果_selectedIndex + 1 = Me.lvTender.Items.Count然后
        e.Handled =假
    万一
结束如果

If e.Key = Key.Down Then If _selectedIndex + 1 = Me.lvTender.Items.Count Then e.Handled = False End If End If

请帮忙

推荐答案

您需要做的e.Handled = true来阻止事件沙恩

You need to do e.Handled = true to stop the event shain

如果e.Key = Key.Down AndAlso运算_selectedIndex + 1 = Me.lvTender.Items.Count然后
  e.Handled = TRUE
结束如果

If e.Key = Key.Down AndAlso _selectedIndex + 1 = Me.lvTender.Items.Count Then e.Handled = True End If

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