Question

I m working on a WP7 app where I use a pre-populated SQLCE database. Therefore I use a lot of databound controls. Right now I m a bit in trouble. To keep it short: I need to access the last ListBoxItem (not the business object) of a databound ListBox and change some Properties like the Margin of that last Item. I was not able to get this Item by using the methods of the VisualTreeHelper class nor by using something like

(myListBox.Items.Last() as ListBoxItem).Margin = new Thickness(0, 0, 0, 0);

我 ListBox. 项目似乎无效(!)

There is some black magic going on, so is there a simple way? Thank you in advance!

Answer 1

事实不是直接尝试和操纵《国际调查》,而是因为不仅修改了你对清单具有约束力的数据,而且增加了财产以表明它是否是最后的。然后,NYOu可以在数据模板中使用这种财产来控制如何展示这种财产。

Answer 2

页: 1 ListBoxItem through ItemContainerGenerator?

((ListBoxItem)myListBox.ItemContainerGenerator.ContainerFromIndex(myListBox.Items.Count-1)).Margin = new Thickness(42, 0, 0, 0);

这应当行之有效。否则,与你具有约束力的问题就是错误的。

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