BoolDataTemplateSelector

public class BoolDataTemplateSelector : DataTemplateSelector
{
    public DataTemplate TrueTemplate { get; set; }
    public DataTemplate FalseTemplate { get; set; }

    public override DataTemplate SelectTemplate(object item, DependencyObject container)
    {
        // Null value can be passed by IDE designer
        if (item == null) return null;

        var b = Convert.ToBoolean(item);
        return b ? TrueTemplate : FalseTemplate;
    }
}