How to: Apply the Button Group layout to a set of bar item links
The following example shows how to apply the Button Group layout to a set of bar item links. The Button Group layout is enabled via the BarItemLink.ActAsButtonGroup property.
using DevExpress.XtraBars;
BarButtonItem[] items = new BarButtonItem[] {barButtonItem1, barButtonItem2, barButtonItem3 };
foreach (BarButtonItem item in items) {
item.Links[0].ActAsButtonGroup = true;
}