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copied!<p>I've done this through a <code>ValueConverter</code> that converts an <code>enum</code> to a <code>bool</code>. By passing the enum value that your radio button represents as the <code>ConverterParameter</code>, the converter returns whether this radio button should be checked or not.</p> <pre><code><Window.Resources> <Converters:EnumConverter x:Key="EnumConverter" /> </Window.Resources> <RadioButton IsChecked="{Binding Path=MyEnum, Mode=TwoWay, Converter={StaticResource EnumConverter}, ConverterParameter=Enum1}"} Content="Enum 1" /> <RadioButton IsChecked="{Binding Path=MyEnum, Mode=TwoWay, Converter={StaticResource EnumConverter}, ConverterParameter=Enum2}"} Content="Enum 2" /> </code></pre> <p><code>EnumConverter</code> is defined as follows:</p> <pre><code>public class EnumConverter : IValueConverter { public object Convert(object value, Type targetType, object parameter, CultureInfo culture) { if (targetType.IsAssignableFrom(typeof(Boolean)) && targetType.IsAssignableFrom(typeof(String))) throw new ArgumentException("EnumConverter can only convert to boolean or string."); if (targetType == typeof(String)) return value.ToString(); return String.Compare(value.ToString(), (String)parameter, StringComparison.InvariantCultureIgnoreCase) == 0; } public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture) { if (targetType.IsAssignableFrom(typeof(Boolean)) && targetType.IsAssignableFrom(typeof(String))) throw new ArgumentException("EnumConverter can only convert back value from a string or a boolean."); if (!targetType.IsEnum) throw new ArgumentException("EnumConverter can only convert value to an Enum Type."); if (value.GetType() == typeof(String)) { return Enum.Parse(targetType, (String)value, true); } //We have a boolean, as for binding to a checkbox. we use parameter if ((Boolean)value) return Enum.Parse(targetType, (String)parameter, true); return null; } } </code></pre> <p>Note that I don't databind to the list of enums to generate the radio buttons, I've done them by hand. If you wanted to fill the list of radio buttons through a binding, I think you'll need to change the <code>IsChecked</code> binding to a <code>MultiBinding</code> which binds to both the current value and the radio's enum value, because you cannot use a binding on <code>ConverterParameter</code>.</p>

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