Selection
You can restrict the number of Buttons that can be selected by using the .Selection() property of each Button within the ButtonGroup.
The property can be configured for a single or multiple selection.
The following example demonstrates how to use the .Selection() configuration.
@(Html.Kendo().ButtonGroup()
.Name("select-period")
.Selection("multiple")
.Items(t =>
{
t.Add().Text("Month");
t.Add().Text("Quarter");
t.Add().Text("Year");
}))