c# wpf在列表框中使用复选框绑定到另一个对象中的对象

Question

我有一个列表框，它由如下所示的元素组成。

 class ItemForListbox
    {
        public string path { get; set; }
        public string file { get; set; }
        public InstallationPackageChoice choices { get; set; }
        public KeepKill keepKill { get; set; }
    }

choices 和 keepKill 是对象。

我的列表框 XAML 有这个 DataTemplate

<ItemsControl.ItemTemplate>
                <DataTemplate>
                    <StackPanel Orientation="Horizontal" HorizontalAlignment="Right">
                        <Button Name="btnPackageVersion" Style="{StaticResource ListBoxButtonFormat}" Content ="Package version" Click="btnInstallPackage_Click" HorizontalAlignment="Right"/>

                        <TextBlock Name="txtBlkPath" Text="{Binding path}" FontSize="10" Width="500" Height="20" Margin="10,10,0,0"/>
                        <Button Name="btnFilterPath" Style="{StaticResource ListBoxButtonFormat}" Content ="Filter path" Click="btnFilterpath_Click" HorizontalAlignment="Right"/>

                        <TextBlock Name="txtBlkFile" Text="{Binding file}" FontSize="10" Width="150" Height="20" Margin="10,10,0,0"/>
                        <Button Name="btnFilterfile" Style="{StaticResource ListBoxButtonFormat}" Content="Filter file" Click="btnFilterfile_Click" HorizontalAlignment="Right"/>

                        <CheckBox Name="chkBxKeep" Content="Keep" VerticalAlignment="Center" HorizontalAlignment="Right" IsChecked="True" Checked="chkBxKeep_Checked"/>
                        <CheckBox Name="chkBxKill" Content="Kill" VerticalAlignment="Center" HorizontalAlignment="Right" Checked="chkBxKill_Checked"/>

                        <Separator  Name="MySeparator" 
                                        Height="3"
                                        Width="Auto"
                                        HorizontalAlignment="Stretch"
                                        VerticalAlignment="Bottom"                   
                                        Background="Red" />
                    </StackPanel>
                </DataTemplate>
</ItemsControl.ItemTemplate>

两个checkbox底层数据是Listbox元素对象中的killKeep对象。

问题是我想要两个复选框的单选按钮功能，所以当我选中一个复选框时，另一个取消选中。我不使用单选按钮的原因是我根本不了解它们的绑定。但现在我发现我也不知道如何使用复选框进行此绑定。

我希望有人可以帮助我。

Answer 1

您可以使用绑定转换器来绑定复选框的IsChecked 属性：

<Window.Resources>
    <local:InverseBooleanConverter x:Key="InverseBooleanConverter"/>
</Window.Resources>
...
<CheckBox Name="chkBxKeep" Content="Keep" VerticalAlignment="Center" HorizontalAlignment="Right" IsChecked="True" Checked="chkBxKeep_Checked"/>
<CheckBox Name="chkBxKill" Content="Kill" VerticalAlignment="Center" HorizontalAlignment="Right" Checked="chkBxKill_Checked"
IsChecked="{Binding ElementName=chkBxKeep, Path=IsChecked, Converter={StaticResource InverseBooleanConverter}}"/>

转换器

public class InverseBooleanConverter : IValueConverter
{
    #region IValueConverter Members

    public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
    {
        if (value != null && value is bool)
        {
            return !(bool)value;
        }

        return true;
    }

    public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
    {
        return Convert(value, targetType, parameter, culture);
    }

    #endregion
}