How to hide the dropdown portion of the quick access toolbar in WinForms RibbonControlAdv?
Hide the dropdown
We can hide the dropdown portion of the Quick Access Toolbar by setting the property ShowQuickItemsDropDownButton of RibbonControlAdv to false.
C#
ribbonControlAdv1.ShowQuickItemsDropDownButton=false;
VB
ribbonControlAdv1.ShowQuickItemsDropDownButton=FALSE
Reference link: https://help.syncfusion.com/windowsforms/ribbon/quick-access-toolbar