RadioButton - ahatornn/clforms GitHub Wiki

ClForms.Elements.RadioButton
Enables the user to select a single option from a group of choices when paired with other RadioButton controls

public class RadioButton: ButtonBase, IElementStyle<RadioButton>

Inheritance Control -> BaseFocusableControl -> ButtonBase -> RadioButton
Derived IElementStyle<RadioButton>

The following code example creates and initializes three RadioButton controls in a GroupBox.

var grBox1 = new GroupBox()
{
    Text = "Group1",
    Margin = new Thickness(0, 0, 0, 1),
    Padding = new Thickness(2, 0),
};
var grStackPanel1 = new StackPanel(Orientation.Vertical);
for (int i = 1; i <= 3; i++)
{
    var rButton = new RadioButton($"RadioButton{i}");
    rButton.OnCheckedChanged += CheckedChanged;
    grStackPanel1.AddContent(rButton);
}
grBox1.AddContent(grStackPanel1);
…
private void CheckedChanged(object sender, PropertyChangedEventArgs<bool> e)
{
    if (e.NewValue && sender is RadioButton radioButton)
    {
        propertyChangedLabel.Text = 
            $"You checked {radioButton.Text} in {groupBox.Text}";
    }
}

You can find more examples of using the RadioButton in this project

When the user selects one option button (also known as a radio button) within a group, the others clear automatically. All RadioButton controls in a given container, such as a Panel, constitute a group. To create multiple groups on one form, place each group in its own container, such as a GroupBox or Panel control.

RadioButton and CheckBox controls have a similar function: they offer choices a user can select or clear. The difference is that multiple CheckBox controls can be selected at the same time, but option buttons are mutually exclusive.

Use the Checked property to get or set the state of a RadioButton.