如何访问ListBoxItems的Visibility属性 [英] How to access Visibility property of the ListBoxItems

问题描述

在我的WPF程序我有一个的ListBox 控件：

  < ListBox的X：名称=mailsListBox的SelectionChanged =mailsListBox_SelectionChanged> 
< ListBoxItem的内容=...背景=＃FFF3F3F3保证金=0,0,0,1/> 
< ListBoxItem的内容=....保证金=0,0,0,1能见度=隐藏/> 
< /列表框> 
  

如何访问的能见度属性 ListBoxItems ？我的代码不工作：

  mailsListBox.Items [1] .Visibility =可见; 
  

解决方案

这样的：

 （mailsListBox.Items [1]作为一个ListBoxItem）.Visibility = Visibility.Visible; 
  

或者你可以使用的 ItemContainerGenerator.ContainerFromItem 方法：

 （（ListBoxItem中）（mailsListBox.ItemContainerGenerator.ContainerFromItem（mailsListBox.Items [1]）））=能见度能见度。可见; 
  

In my WPF program I have a ListBox control:

<ListBox x:Name="mailsListBox" SelectionChanged="mailsListBox_SelectionChanged" >
    <ListBoxItem Content="..." Background="#FFF3F3F3" Margin="0,0,0,1" />
    <ListBoxItem Content="...." Margin="0,0,0,1" Visibility="Hidden"/>
</ListBox>

How can I access Visibility property of the ListBoxItems? My code doesn't works:

mailsListBox.Items[1].Visibility = Visible;

解决方案

Like this:

(mailsListBox.Items[1] as ListBoxItem).Visibility = Visibility.Visible;

Or you can use ItemContainerGenerator.ContainerFromItem method:

((ListBoxItem)(mailsListBox.ItemContainerGenerator.ContainerFromItem(mailsListBox.Items[1]))).Visibility = Visibility.Visible;

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