'Declaration
<System.ComponentModel.DescriptionAttribute("Fired when the NOptionButton closes its drop-down part(available only for OptionButtonMode.DropDown.")> Public Event CloseDropDown As System.EventHandler
'Usage
Dim instance As NOptionButton Dim handler As System.EventHandler AddHandler instance.CloseDropDown, handler
[System.ComponentModel.Description("Fired when the NOptionButton closes its drop-down part(available only for OptionButtonMode.DropDown.")] public event System.EventHandler CloseDropDown