How to get UIElement at specific position in ItemsControl in WP7? - windows-phone-7

Question

I filled the icBoard with 50 Cell objects, so each Rectangle object has Cell as data object. Now, I want according to index or cell object to get the corresponding Rectangle element. For example I want to get the Rectangle in index=15. Not it's data but the Rectangle itself.
How I can do this?
public MainPage()
{
InitializeComponent();
var cells = new List<Cell>();
for (int i = 0; i < 50; i++)
{
cells.Add(new Cell());
}
icCells.ItemsSource = cells;
}
public void sector_Tap(object sender, System.Windows.Input.GestureEventArgs e)
{
//some code
//....
var tappedRectangle = (sender as Rectangle);
var spesificRectangle = SOMEHOW_GET_RECTANGLE_AT_POSITION_15;
}
<ItemsControl Name="icBoard" Grid.Column="0" Margin="0">
<ItemsControl.ItemTemplate>
<DataTemplate>
<Rectangle Fill="#501e4696" Width="30" Height="30" Margin="1" Tap="sector_Tap" />
</DataTemplate>
</ItemsControl.ItemTemplate>
<ItemsControl.ItemsPanel>
<ItemsPanelTemplate>
<toolkit:WrapPanel />
</ItemsPanelTemplate>
</ItemsControl.ItemsPanel>
</ItemsControl>

Answer 1

I believe this might work:
ContentPresenter contentPresenter = itemsControl.ItemContainerGenerator.ContainerFromIndex(15) as ContentPresenter;
Rectangle rectangle= FindVisualChild<Rectangle>(contentPresenter );
if (rectangle != null)
{
}
public static T FindVisualChild<T>(DependencyObject depObj) where T : DependencyObject
{
if (depObj != null)
{
for (int i = 0; i < VisualTreeHelper.GetChildrenCount(depObj); i++)
{
DependencyObject child = VisualTreeHelper.GetChild(depObj, i);
if (child != null && child is T)
{
return (T)child;
}
T childItem = FindVisualChild<T>(child);
if (childItem != null) return childItem;
}
}
return null;
}