Brings the specified diagram items to the front of the stack.
NuGet Package: DevExpress.Wpf.Diagram
With any two diagram items in the canvas, one item always appears in front of the other. When a diagram item is added to the Canvas, it is automatically placed in front of other items. The BringSelectedItemsToFront method allows you to change the layering order by bringing the selected items all the way to the front of the stack.