ArcGIS Pro 2.7 API Reference Guide
ShowOptionsDropDown Property

ArcGIS.Desktop.Mapping.Controls Namespace > SymbolPickerControl Class : ShowOptionsDropDown Property
Gets and sets whether to show the options burger button on the control
Syntax
public bool ShowOptionsDropDown {get; set;}
Public Property ShowOptionsDropDown As Boolean
Remarks
Use the options burger button menu to provide picker view options and grouping options for the results
If the options burger button menu is shown _and_ the ViewingOption and/or GroupingOption dependency properties are used then changes to the bindings are not reflected on the options menu. In other words, viewing and grouping options should either be via the UI or programmatically via the bindings but not both.
The default is false
Requirements

Target Platforms: Windows 10, Windows 8.1

See Also

Reference

SymbolPickerControl Class
SymbolPickerControl Members