ArcGIS Pro 3.4 API Reference Guide
ArcGIS.Desktop.Layouts Namespace / Element Class / SetLockedAspectRatio Method
Double
Example Version

SetLockedAspectRatio Method (Element)
Sets the locked aspect ratio value of the element. This method must be called on the MCT. Use QueuedTask.Run.
Syntax
public void SetLockedAspectRatio( 
   bool lockedAspectRatio
)

Parameters

lockedAspectRatio
Double
Exceptions
ExceptionDescription
This method must be called within the lambda passed to QueuedTask.Run.
This element requires its mapview to be active
Remarks
When set to true, this means if element width is set, then the element height will be automatically adjusted appropriately. The same is true if height were modified, then width would automatically be adjusted.
Placement for an element contained in graphics layer requires the mapview be active.
Example
Element_GetSetLockedAspectRatio
//Modify an element's aspect ratio. 

//Perform on the worker thread
await QueuedTask.Run(() =>
{
  bool elmLocked = element.GetLockedAspectRatio();
  elmLocked = false;  //Turn off the locked state.

  element.SetLockedAspectRatio(elmLocked); //You don't have to get to set; a shortcut would be: element.SetLockedAspectRatio(false);
});
Requirements

Target Platforms: Windows 11, Windows 10

ArcGIS Pro version: 3 or higher.
See Also