ArcGIS Pro 2.8 API Reference Guide
OnExpressionChanged Method

ArcGIS.Desktop.Mapping.Controls Namespace > QueryBuilderControl Class : OnExpressionChanged Method
This raises our 'public' event. Users can hook up delegates or use the Expression property.
Syntax
protected internal virtual void OnExpressionChanged()
Protected Friend Overridable Sub OnExpressionChanged() 
Requirements

Target Platforms: Windows 10, Windows 8.1

See Also

Reference

QueryBuilderControl Class
QueryBuilderControl Members