只显示WPF列表框数据绑定中允许的数据

我现在有一个列表框:

<ListBox HorizontalAlignment="Left"
         ItemsSource="{Binding Data, ElementName=bookingDomainDataSource}"
         Margin="158,134,0,45"
         x:Name="bookingListBox"
         Width="429"
         SelectedItem="{Binding Path=SelectedItem, Mode=TwoWay, ElementName=bookingComboBox}">
    <ListBox.ItemTemplate>
        <DataTemplate>
            <StackPanel Orientation="Horizontal">
                <TextBlock Text="{Binding Path=userId}"
                           Width="100" />
                <TextBlock Text="{Binding Path=bookingName}"
                           Width="100" />
                <TextBlock Text="{Binding Path=bookingDate}"
                           Width="100" />
                <TextBlock Text="{Binding Path=showId}"
                           Width="100" />
                <TextBlock Text="{Binding Path=paymentId}"
                           Width="100" />
                <TextBlock Text="{Binding Path=ticketId}"
                           Width="100" />
                <TextBlock Text="{Binding Path=ticketQuantity}"
                           Width="100" />
            </StackPanel>
        </DataTemplate>
    </ListBox.ItemTemplate>
</ListBox>

我想只显示itemssource中具有特定userId的行，我该怎么做呢?

谢谢。