Vista - Problem Modifying Adorners

I'm trying to implement Adorners for some visual objects (Selecting multiple
Controls on a canvas at once and moving them using Dragging ).

the best resource i've found is Henry Hahn's example on his blog:

http://blogs.msdn.com/henryh/archive...19/440854.aspx

i tried to select multiple items by clicking on them holding the control Key
and setting the Selected bool to false

if (Keyboard.Modifiers == ModifierKeys.Control)
{
selected = false;
}
if (e.Source != myCanvas)
{
_isDown = true;
_startPoint = e.GetPosition(myCanvas);

selectedElement = e.Source as UIElement;

_originalLeft = Canvas.GetLeft(selectedElement);
_originalTop = Canvas.GetTop(selectedElement);

aLayer = AdornerLayer.GetAdornerLayer(selectedElement);
aLayer.Add(new ResizingAdorner(selectedElement));
selected = true;
SelectCount ++; //SelectCount is count of multiple
// controls selected
e.Handled = true;
}

Worked fine till here , but the build stumbles when try to release all the
controls selected by Adorners :

if (selected) // if a control is selected using adorner
{
selected = false;
if (selectedElement != null)
{
for(int i=0;i< SelectCount;i++) //SelectCount is count of
multiple
// controls
selected
{
// Remove the adorner from the selected element
aLayer.Remove(aLayer.GetAdorners(selectedElement)[i]);
}
selectedElement = null;
}
}

This line--> aLayer.Remove(aLayer.GetAdorners(selectedElement)[i]); is
always throwing array out of index exception, am i trying the right way to do
it ?

Also can the selected controls can be moved around as we do it in the
Desktop ?


Please Help !!!!
thanks all!