ArcGIS Pro 3.0 API Reference Guide
ArcGIS.Core.CIM Namespace / CIMLayoutDocument Class / LayoutDefinition Property

LayoutDefinition Property
Gets or sets the layout definition of the layout document.
Syntax
public CIMLayout LayoutDefinition {get; set;}
Requirements

Target Platforms: Windows 11, Windows 10, Windows 8.1

ArcGIS Pro version: 2.0 or higher.
See Also