ArcGIS Pro 3.0 API Reference Guide
ArcGIS.Desktop.Mapping Namespace / ImageServiceLayer Class / DefinitionQuery Property

DefinitionQuery Property (ImageServiceLayer)
Gets the where clause of the active definition query.
Syntax
public string DefinitionQuery {get;}
Requirements

Target Platforms: Windows 11, Windows 10, Windows 8.1

ArcGIS Pro version: 3.0 or higher.
See Also