How can I reduce RadioButton binding code?

问题

I'm following this answer on how to databind enums (ints in my case) to RadioButtons, but if I've got several TabItems each with 10x10 grids of RadioButtons, is there any way to get rid of some of that boilerplate? As is, each RadioButton has to have all this info with it:

<RadioButton 
    IsChecked="{Binding  
        RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type Window}},  
        Path=FavoriteColor,
        Converter={StaticResource IntToBoolConverter},
        Mode=TwoWay,
        ConverterParameter=5}" 
    Content="Red" Grid.Column="4" Grid.Row="6" />

Preferably I'd like to be able to set the RelativeSource, the Converter, and the Mode once in the TabControl, the Path once in each TabItem, and only have the ConverterParameter set per RadioButton. Is this possible in XAML? If not, would doing it in codebehind make more sense?

回答1:

Here would be an improvement on my answer on a related question, utilizing the single selection mode of ListBoxes:

<ListBox SelectionMode="Single" SelectedItem="{Binding EnumValue}"
        Style="{StaticResource BorderlessStyle}">
    <ListBox.Resources>
        <ObjectDataProvider x:Key="items" MethodName="GetValues"
                            ObjectType="{x:Type sys:Enum}">
            <ObjectDataProvider.MethodParameters>
                <x:Type TypeName="local:MainWindow+TestEnum" />
            </ObjectDataProvider.MethodParameters>
        </ObjectDataProvider>
    </ListBox.Resources>
    <ListBox.ItemsSource>
        <Binding Source="{StaticResource items}" />
    </ListBox.ItemsSource>
    <ListBox.ItemsPanel>
        <ItemsPanelTemplate>
            <!-- Automatic grid layout, adjust as needed -->
            <UniformGrid Columns="2" />
        </ItemsPanelTemplate>
    </ListBox.ItemsPanel>
    <ListBox.ItemTemplate>
        <DataTemplate>
            <RadioButton Content="{Binding}"
                    IsChecked="{Binding IsSelected, RelativeSource={RelativeSource AncestorType=ListBoxItem}}" />
        </DataTemplate>
    </ListBox.ItemTemplate>
</ListBox>

The style to make the ListBox itself disappear:

<Style x:Key="BorderlessStyle" TargetType="ListBox">
    <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate TargetType="ListBox">
                <ItemsPresenter />
            </ControlTemplate>
        </Setter.Value>
    </Setter>
    <Setter Property="ItemContainerStyle">
        <Setter.Value>
            <Style TargetType="ListBoxItem">
                <Setter Property="Template">
                    <Setter.Value>
                        <ControlTemplate TargetType="ListBoxItem">
                            <ContentPresenter />
                        </ControlTemplate>
                    </Setter.Value>
                </Setter>
            </Style>
        </Setter.Value>
    </Setter>
</Style>

来源：https://stackoverflow.com/questions/9145606/how-can-i-reduce-radiobutton-binding-code

标签

wpf

xaml

data-binding

radio-button