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ItemContainerGenerator.ContainerFromIndex Method

Returns the element corresponding to the item at the given index within the ItemCollection.

Namespace: System.Windows.Controls
Assembly: PresentationFramework (in presentationframework.dll)

public DependencyObject ContainerFromIndex (
	int index
)
public DependencyObject ContainerFromIndex (
	int index
)
public function ContainerFromIndex (
	index : int
) : DependencyObject
You cannot use methods in XAML.

Parameters

index

The index of the desired item.

Return Value

Returns the element corresponding to the item at the given index within the ItemCollection or returns a null reference (Nothing in Visual Basic) if the item is not realized.

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.

<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()) + ".";
}

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()) + ".";

For the complete sample see Get ListBoxItem with Index Sample.

Windows 98, Windows Server 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0
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