ArcGIS Pro 3.4 API Reference Guide
ArcGIS.Core.Data.NetworkDiagrams Namespace / RelativeMainlineDiagramLayoutParameters Class / MainlineValues Property
Version

MainlineValues Property
The TypeAttributeName values that identify the main lines.
Syntax
public string[] MainlineValues {get; set;}
Remarks
When such values exist, they must be the same for any edge that composes the main lines (which could come from multiple utility network feature classes).
Requirements

Target Platforms: Windows 11, Windows 10

ArcGIS Pro version: 3 or higher.
See Also