ArcGIS Pro 2.4 API Reference Guide
SetTOCPositionAbsolute Method
Example 

ArcGIS.Desktop.Layouts Namespace > Element Class : SetTOCPositionAbsolute Method
Reference to a Layout or a GroupElement
Boolean
Sets the position of an element either at the top or bottom of the layout TOC or a group element. This method must be called on the MCT. Use QueuedTask.Run.
Syntax
Public Sub SetTOCPositionAbsolute( _
   ByVal targetContainer As ILayoutElementContainer, _
   ByVal isTop As Boolean _
) 
public void SetTOCPositionAbsolute( 
   ILayoutElementContainer targetContainer,
   bool isTop
)

Parameters

targetContainer
Reference to a Layout or a GroupElement
isTop
Boolean
Exceptions
ExceptionDescription
This method must be called within the lambda passed to QueuedTask.Run.
Remarks
If set to true, the element is placed at the top of the layout TOC or the top position in a group element. Elements can be easily moved into or out of groups.
Example
//Move an element to the top of the TOC

//Perform on the worker thread
await QueuedTask.Run(() =>
{
  element.SetTOCPositionAbsolute(layout, true);
});
Requirements

Target Platforms: Windows 10, Windows 8.1, Windows 7

See Also

Reference

Element Class
Element Members