ArcGIS Pro 3.4 API Reference Guide
ArcGIS.Desktop.Layouts Namespace / Layout Class / CanSendBackward Method / CanSendBackward(IEnumerable<Element>) Method
The elements to check
Example

In This Topic
    CanSendBackward(IEnumerable<Element>) Method
    In This Topic
    Checks whether the given elements can be moved back within their parent's element collection. This method must be called on the MCT. Use QueuedTask.Run.
    Syntax
    public bool CanSendBackward( 
       IEnumerable<Element> elements
    )
    Public Overloads Function CanSendBackward( _
       ByVal elements As IEnumerable(Of Element) _
    ) As Boolean

    Parameters

    elements
    The elements to check

    Return Value

    True if the elements can be moved back.
    Exceptions
    ExceptionDescription
    This method or property must be called within the lambda passed to QueuedTask.Run.
    elements cannot be null or empty
    Remarks
    Element z order is relative to the element collection within their parent. The bottom element has a z order of 0. The top element has a z order of N - 1. All elements must have the same parent or false is returned. If any one of the elements is already at the bottom of their parent's element collection, false is returned. False can also be returned if any of the elements' z order cannot be checked (e.g. an element does not belong to the page layout, etc.).
    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