internal override void Apply(VisualElement container)
{
/// <sample>
// You can provide the list of choices by code, or by comma separated values in UXML
// <DropdownField .... choices="Option 1,Option 2,Option 3" .... />
var choices = new List <string> {
"Option 1", "Option 2", "Option 3"
};
// Get a reference to the radio button group field from UXML and assign it its value.
var uxmlField = container.Q <RadioButtonGroup>("the-uxml-field");
uxmlField.choices = choices;
uxmlField.value = 0;
// Create a new field, disable it, and give it a style class.
var csharpField = new RadioButtonGroup("C# Field", choices);
csharpField.value = 0;
csharpField.SetEnabled(false);
csharpField.AddToClassList("some-styled-field");
csharpField.value = uxmlField.value;
container.Add(csharpField);
// Mirror value of uxml field into the C# field.
uxmlField.RegisterCallback <ChangeEvent <int> >((evt) =>
{
csharpField.value = evt.newValue;
});
/// </sample>
}