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

WhereClause Property (DefinitionQuery)
Gets or sets the definition expression to filter rows in the dataset.
Syntax
public string WhereClause {get; set;}
Requirements

Target Platforms: Windows 11, Windows 10, Windows 8.1

ArcGIS Pro version: 3.0 or higher.
See Also