How to: Get a ListBoxItem
If you need to get a specific ListBoxItem at a particular index in a ListBox you can use ItemContainerGenerator. The following example shows the ListBox and its items.
Example
<ListBox Margin="10,0,0,5" Name="lb" VerticalAlignment="Top" Grid.Column="0" Grid.Row="2">
<ListBoxItem>Item 0</ListBoxItem>
<ListBoxItem>Item 1</ListBoxItem>
<ListBoxItem>Item 2</ListBoxItem>
<ListBoxItem>Item 3</ListBoxItem>
</ListBox>
This example shows how to retrieve the item by specifying the index of the item in the ContainerFromIndex property.
private void GetIndex0(object sender, RoutedEventArgs e)
{
ListBoxItem lbi = (ListBoxItem)
(lb.ItemContainerGenerator.ContainerFromIndex(0));
Item.Content = "The contents of the item at index 0 are: " +
(lbi.Content.ToString()) + ".";
}
Sub GetIndex0(ByVal Sender As Object, ByVal e As RoutedEventArgs)
Dim lbi As ListBoxItem = CType( _
lb.ItemContainerGenerator.ContainerFromIndex(0), ListBoxItem)
Item.Content = "The contents of the item at index 0 are: " + _
(lbi.Content.ToString()) + "."
End Sub
Once you have retrieved the list box item you can do things such as display the contents of the item as shown in this example.
Item.Content = "The contents of the item at index 0 are: " +
(lbi.Content.ToString()) + ".";
Item.Content = "The contents of the item at index 0 are: " + _
(lbi.Content.ToString()) + "."
For the complete sample see Get ListBoxItem with Index Sample.