ArcGIS Pro 2.7 API Reference Guide
OnDropDownClosed Method

ArcGIS.Desktop.Framework.Contracts Namespace > CustomControl Class : OnDropDownClosed Method
If the CustomControl specifies the DAML attribute 'isDrop=true', this function is called whenever its drop-down is closed.
Syntax
protected internal virtual void OnDropDownClosed()
Protected Friend Overridable Sub OnDropDownClosed() 
Requirements

Target Platforms: Windows 10, Windows 8.1

See Also

Reference

CustomControl Class
CustomControl Members