Change the stacking order

To change the stacking order of elements within a stack panel

1. Double-click a stack panel in your Microsoft Expression Blend document, to make the panel the active element.

2. In the stack panel, click a child element to select it.

3. On the artboard or under Objects and Timeline in the Interaction panel, drag the child element into the desired position in the order. Notice as you drag the element on the artboard, a black line shows where you can insert the element.