Information
The topic you requested is included in another documentation set. For convenience, it's displayed below. Choose Switch to see the topic in its original location.

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
)
You cannot use methods in XAML.

Parameters

index
Type: System.Int32

The index of the desired item.

Return Value

Type: System.Windows.DependencyObject
Returns the element corresponding to the item at the given index within the ItemCollection or returns null if the item is not realized.

If you need to get a specific ListBoxItem at a particular index in a ListBox, you can use an ItemContainerGenerator.

The following example shows a 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>

The following example shows how to retrieve the item by specifying the index of the item in the ContainerFromIndex property of the ItemContainerGenerator.

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()) + ".";
}

After you have retrieved the list box item, you can display the contents of the item, as shown in the following example.

Item.Content = "The contents of the item at index 0 are: " +
    (lbi.Content.ToString()) + ".";

Windows 7, Windows Vista, Windows XP SP2, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5, 3.0

Community Additions

Show:
© 2014 Microsoft