I have a view model with a list of items with the Checked property.
In my WPF XAML, I create a ListBox whose items have a checkbox each in their DataTemplate.

Also, the view model has a property AllowMultiSelect. If true, the interface must allow the user to check many boxes. But if false, the interface should show RadioButtons instead and the user should select only one.

I tried a fancy XAML containing both a CheckBox and a RadioButton for the items, setting their Visibility based on the value of AllowMultiSelect with help of some derived properties.

<ListBox.ItemTemplate>
    <DataTemplate DataType="{x:Type local:VMType}">
        <StackPanel Orientation="Horizontal" Margin="0 5 0 0">
            <CheckBox IsChecked="{Binding IsChecked}" 
                      Visibility="{Binding Path=DataContext.ShowTableCheck, 
                                           ElementName=ListBoxODTables,
                                           Converter={StaticResource BoolToVisible}}"/>
            <RadioButton IsChecked="{Binding IsChecked}" GroupName="TableRadios"
                         Visibility="{Binding Path=DataContext.ShowTableRadio,
                                              ElementName=ListBoxODTables, 
                                              Converter={StaticResource BoolToVisible}}"/>
            <TextBlock Text="{Binding Text}" Margin="5 0 0 0"/>
        </StackPanel>

But the RadioButton (even hidden) is affecting the selection. As I click a checkbox, the Checked property of the item changes, this change reflects in the hidden RadioButton, then the radio automatically deselects other items.

Question: is there a way to “bind only if” a property is true? if AllowMultiSelect is true, I don’t want to bind the radio buttons.