WPF中多个RadioButton绑定到一个属性

如图样：

在View中：

<RadioButton IsChecked="{Binding Option, Converter={cvt:EnumToBooleanConverter},ConverterParameter={x:Static enum:RadionButtonOptions.One}}" Content="One" DockPanel.Dock="Top"/>

<RadioButton IsChecked="{Binding Option, Converter={cvt:EnumToBooleanConverter},ConverterParameter={x:Static enum:RadionButtonOptions.Two}}" Content="Two" DockPanel.Dock="Top"/>

<RadioButton IsChecked="{Binding Option, Converter={cvt:EnumToBooleanConverter},ConverterParameter={x:Static enum:RadionButtonOptions.Three}}" Content="Two" DockPanel.Dock="Top"/>

在ViewModel中：

public const string OptionPropertyName = "Option";

private RadionButtonOptions _option;

public RadionButtonOptions Option

{

    get

    {

        return _option;

    }



    set

    {

        if (_option == value)

            return;



        _option = value;

        RaisePropertyChanged(OptionPropertyName);

    }

}

Converter：

[MarkupExtensionReturnType(typeof(EnumToBooleanConverter))]

[ValueConversion(typeof(Enum), typeof(bool))]

public class EnumToBooleanConverter

    : MarkupExtension, IValueConverter

{

    private static EnumToBooleanConverter converter = null;



    public override object ProvideValue(IServiceProvider serviceProvider)

    {

        if (null == converter)

        {

            converter = new EnumToBooleanConverter();

        }



        return converter;

    }



    public object Convert(object value, Type targetType, object parameter,

        System.Globalization.CultureInfo culture)

    {

        return value.Equals(parameter);

    }



    public object ConvertBack(object value, Type targetType,

        object parameter, System.Globalization.CultureInfo culture)

    {

        return value.Equals(true) ? parameter : Binding.DoNothing;

    }

}

枚举类型：

public enum RadionButtonOptions

{

    One,

    Two,

    Three,

}

================================================================================

整理代码之后把转换器的ConvertBack方法体错写成

return Binding.DoNothing;

也是醉了。

。