假设我有:

<RadioButton GroupName="Group1" IsChecked="{Binding Path=RadioButton1IsChecked}" />
<RadioButton GroupName="Group1" IsChecked="{Binding Path=RadioButton2IsChecked}" />

然后在我的数据源类中我有:

And then in my data source class I have:

public bool RadioButton1IsChecked { get; set; }
public bool RadioButton2IsChecked { get; set; }
public enum RadioButtons { RadioButton1, RadioButton2, None }
public RadioButtons SelectedRadioButton
{
    get
    {
        if (this.RadioButtonIsChecked) 
            return RadioButtons.RadioButton1;
        else if (this.RadioButtonIsChecked) 
            return RadioButtons.RadioButton2;
        else 
            return RadioButtons.None;
     }
}

我可以以某种方式将我的单选按钮直接绑定到 SelectedRadioButton 属性吗?我真的只需要 RadioButton1IsChecked 和 RadioButton2IsChecked 属性来计算选定的单选按钮.

Can I somehow bind my radio buttons directly to SelectedRadioButton property? I really need RadioButton1IsChecked and RadioButton2IsChecked properties only to calculate the selected radiobutton.

推荐答案

<RadioButton GroupName="Group1" IsChecked="{Binding Path=SelectedRadioButton, Converter={StaticResource EnumBooleanConverter}, ConverterParameter=RadioButton1}" />
<RadioButton GroupName="Group1" IsChecked="{Binding Path=SelectedRadioButton, Converter={StaticResource EnumBooleanConverter}, ConverterParameter=RadioButton2}" />

public enum RadioButtons { RadioButton1, RadioButton2, None }
public RadioButtons SelectedRadioButton {get;set;}

 public class EnumBooleanConverter : IValueConverter
    {
        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
        {
            var ParameterString = parameter as string;
            if (ParameterString == null)
                return DependencyProperty.UnsetValue;

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

            object paramvalue = Enum.Parse(value.GetType(), ParameterString);
            return paramvalue.Equals(value);
        }

        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
        {
            var ParameterString = parameter as string;
            var valueAsBool = (bool) value;

            if (ParameterString == null || !valueAsBool)
            {
                try
                {
                    return Enum.Parse(targetType, "0");
                }
                catch (Exception)
                {
                    return DependencyProperty.UnsetValue;
                }
            }
            return Enum.Parse(targetType, ParameterString);
        }
    }