ArcGIS Pro 3.4 API Reference Guide
ArcGIS.Desktop.Layouts Namespace / Layout Class / SendBackward Method / SendBackward(Element) Method
The element to send backward
Example Version

SendBackward(Element) Method
Send the element backward within its parent's element collection. This method must be called on the MCT. Use QueuedTask.Run.
Syntax
public void SendBackward( 
   Element element
)

Parameters

element
The element to send backward
Exceptions
ExceptionDescription
This method or property must be called within the lambda passed to QueuedTask.Run.
Value cannot be null: element
elements must belong to layout 'URI'
Remarks
Refer to CanSendBackward(Element) to check whether an element can be sent backward. Element z order can only be changed relative to its parent's element collection. The bottom element will have a z order of 0 within the element parent's element collection. Check z order with Element.ZOrder.
Example
Ordering: Send backward and Bring forward
//On the QueuedTask
//get the current selection set
var sel_elems = layout.GetSelectedElements();
//can they be brought forward? This will also check that all elements have the same parent
if (layout.CanBringForward(sel_elems))
{
  //bring forward
  layout.BringForward(sel_elems);
  //bring to front (of parent)
  //graphicsLayer.BringToFront(sel_elems);
}
else if (layout.CanSendBackward(sel_elems))
{
  //send back
  layout.SendBackward(sel_elems);
  //send to the back (of parent)
  //graphicsLayer.SendToBack(sel_elems);
}
Requirements

Target Platforms: Windows 11, Windows 10

ArcGIS Pro version: 3 or higher.
See Also