ArcGIS Pro 2.3 API Reference Guide
Element Class
Members  Example 

ArcGIS.Desktop.Layouts Namespace : Element Class
Represents an abstract page layout element.
Object Model
Element ClassElement ClassCIMElement Class
Syntax
Remarks
There are many types of elements. This class exposes members that are common to all layout elements.
Example
//Find and element on a layout.

// Reference a layout project item by name
LayoutProjectItem layoutItem = Project.Current.GetItems<LayoutProjectItem>().FirstOrDefault(item => item.Name.Equals("MyLayout"));
if (layoutItem != null)
{
  QueuedTask.Run(() =>
  {
    // Reference and load the layout associated with the layout item
    Layout layout = layoutItem.GetLayout();
    if (layout != null)
    {
      //Find a single specific element
      Element rect = layout.FindElement("Rectangle") as Element;

      //Or use the Elements collection
      Element rect2 = layout.Elements.FirstOrDefault(item => item.Name.Equals("Rectangle"));
    }
  });
}
//Update an element's transparency using the CIM.

//Perform on the worker thread
QueuedTask.Run(() =>
{
  // Reference and load the layout associated with the layout item
  Layout layout = layoutItem.GetLayout();
  if (layout != null)
  {
    // Reference a element by name
    GraphicElement graphicElement = layout.FindElement("MyElement") as GraphicElement;
    if (graphicElement != null)
    {
      // Modify the Transparency property that exists only in the CIMGraphic class.
      CIMGraphic CIMGraphic = graphicElement.Graphic as CIMGraphic;
      CIMGraphic.Transparency = 50;             // mark it 50% transparent
      graphicElement.SetGraphic(CIMGraphic);
    }
  }
});
//Clone a layout graphic element and apply an offset.

//Perform on the worker thread
QueuedTask.Run(() =>
{
  // Reference and load the layout associated with the layout item
  Layout layout = layoutItem.GetLayout();
  if (layout != null)
  {
    // Reference a graphic element by name
    GraphicElement graphicElement = layout.FindElement("MyElement") as GraphicElement;
    if (graphicElement != null)
    {

      //Clone and set the new x,y
      GraphicElement cloneElement = graphicElement.Clone("Clone");
      cloneElement.SetX(cloneElement.GetX() + xOffset);
      cloneElement.SetY(cloneElement.GetY() + yOffset);
    }
  }
});
//Get element's selection count.

//Count the number of selected elements on the active layout view
LayoutView activeLayoutView = LayoutView.Active;
if (activeLayoutView != null)
{
  var selectedElements = activeLayoutView.GetSelectedElements();
  ArcGIS.Desktop.Framework.Dialogs.MessageBox.Show($@"Selected elements: {selectedElements.Count}");
}
//Set the active layout view's selection to include 2 rectangle elements.

//Reference the active view 
LayoutView activeLayoutView = LayoutView.Active;
if (activeLayoutView != null)
{

  //Perform on the worker thread
  QueuedTask.Run(() =>
  {

    //Reference the layout
    Layout lyt = activeLayoutView.Layout;

    //Reference the two rectangle elements
    Element rec = lyt.FindElement("Rectangle");
    Element rec2 = lyt.FindElement("Rectangle 2");

    //Construct a list and add the elements
    List<Element> elmList = new List<Element>
    {
      rec,
      rec2
    };

    //Set the selection
    activeLayoutView.SelectElements(elmList);
  });
}
//Clear the layout selection.

//If the a layout view is active, clear its selection
LayoutView activeLayoutView = LayoutView.Active;
if (activeLayoutView != null)
{          
  activeLayoutView.ClearElementSelection();
}
//Delete an element or elements on a layout.

//Perform on the worker thread
QueuedTask.Run(() =>
{
  //Delete a specific element on a layout
  aLayout.DeleteElement(elm);
 
  //Or delete a group of elements using a filter
  aLayout.DeleteElements(item => item.Name.Contains("Clone"));

  //Or delete all elements on a layout
  aLayout.DeleteElements(item => true);
});
Inheritance Hierarchy

System.Object
   ArcGIS.Desktop.Framework.Contracts.PropertyChangedBase
      ArcGIS.Desktop.Layouts.Element
         ArcGIS.Desktop.Layouts.GraphicElement
         ArcGIS.Desktop.Layouts.GroupElement
         ArcGIS.Desktop.Layouts.MapFrame
         ArcGIS.Desktop.Layouts.MapSurround

Requirements

Target Platforms: Windows 10, Windows 8.1, Windows 7

See Also

Reference

Element Members
ArcGIS.Desktop.Layouts Namespace