ArcGIS Pro 2.8 API Reference Guide
Clone Method (GraphicElement)
Example 

ArcGIS.Desktop.Layouts Namespace > GraphicElement Class : Clone Method
String
Generates a cloned copy of an existing GraphicElement on a page layout. This method must be called on the MCT. Use QueuedTask.Run.
Syntax
public GraphicElement Clone( 
   string suffix
)
Public Function Clone( _
   Optional ByVal suffix As String _
) As GraphicElement

Parameters

suffix
String

Return Value

Exceptions
ExceptionDescription
This method must be called within the lambda passed to QueuedTask.Run.
Map has reached maximum graphics count limit of 4000 elements. One or more elements cannot be created.
Map has reached maximum graphics size limit of 10 MB. One or more elements cannot be created.
Remarks
The suffix parameter is an optional string that is used to tag each newly created GraphicElement. The new element will get the same element name as the parent graphic plus the suffix value along with a numeric sequencer. This makes it possible, if needed, to find and remove unwanted cloned items.
Example
//Note: call within QueuedTask.Run() 
GraphicElement cloneElm = graElm.Clone("Clone");
Requirements

Target Platforms: Windows 10, Windows 8.1

See Also

Reference

GraphicElement Class
GraphicElement Members