如何减少RadioButton绑定代码？ [英] How can I reduce RadioButton binding code?

问题描述

我正在遵循关于如何将枚举数据绑定到我的情况的答案到RadioButtons ，但如果我有几个TabItems都有10x10格的RadioButtons，有没有办法摆脱一些样板？就像这样，每个RadioButton都必须拥有所有这些信息：

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" />

最好我想要设置RelativeSource，Converter和Mode一次TabControl，每个TabItem中的路径一次，并且每个RadioButton仅设置ConverterParameter。这是可能在XAML？如果没有，在codebehind中做的更有意义？

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?

推荐答案

这将是对对相关问题的回答，利用单一选择模式 ListBoxes ：

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>

---

使 ListBox 本身消失：

<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>

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