wpf – 如何绑定到一个枚举的RadioButtons?

我有一个这样的枚举:

public enum MyLovelyEnum
{
  FirstSelection,
  TheOtherSelection,
  YetAnotherOne
};

我在我的DataContext有一个属性:

public MyLovelyEnum VeryLovelyEnum { get; set; }

我在我的WPF客户端有三个RadioButton。

<RadioButton Margin="3">First Selection</RadioButton>
<RadioButton Margin="3">The Other Selection</RadioButton>
<RadioButton Margin="3">Yet Another one</RadioButton>

现在如何绑定到属性的RadioButtons正确的双向绑定?

你可以使用更通用的转换器

public class EnumBooleanConverter : IValueConverter
{
  #region IValueConverter Members
  public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
  {
    string parameterString = parameter as string;
    if (parameterString == null)
      return DependencyProperty.UnsetValue;

    if (Enum.IsDefined(value.GetType(), value) == false)
      return DependencyProperty.UnsetValue;

    object parameterValue = Enum.Parse(value.GetType(), parameterString);

    return parameterValue.Equals(value);
  }

  public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
  {
    string parameterString = parameter as string;
    if (parameterString == null)
        return DependencyProperty.UnsetValue;

    return Enum.Parse(targetType, parameterString);
  }
  #endregion
}

在XAML-Part中使用:

<Grid>
    <Grid.Resources>
      <l:EnumBooleanConverter x:Key="enumBooleanConverter" />
    </Grid.Resources>
    <StackPanel >
      <RadioButton IsChecked="{Binding Path=VeryLovelyEnum, Converter={StaticResource enumBooleanConverter}, ConverterParameter=FirstSelection}">first selection</RadioButton>
      <RadioButton IsChecked="{Binding Path=VeryLovelyEnum, Converter={StaticResource enumBooleanConverter}, ConverterParameter=TheOtherSelection}">the other selection</RadioButton>
      <RadioButton IsChecked="{Binding Path=VeryLovelyEnum, Converter={StaticResource enumBooleanConverter}, ConverterParameter=YetAnotherOne}">yet another one</RadioButton>
    </StackPanel>
</Grid>
翻译自:https://stackoverflow.com/questions/397556/how-to-bind-radiobuttons-to-an-enum

转载注明原文:wpf – 如何绑定到一个枚举的RadioButtons?