WPF gridview HeaderTemplate动态赋值问题

Question

 <DataTemplate x:Key="multipleTable_Header">
    <StackPanel HorizontalAlignment="Stretch" VerticalAlignment="Stretch">
        <Border>
            <Label x:Name="lbMonth" Content="月份" Width="auto"    HorizontalContentAlignment="Center"/>

        </Border>
        <Border>
            <GridSplitter BorderBrush="#DAE3FB" BorderThickness="1" HorizontalAlignment="Stretch" VerticalAlignment="Stretch" />
        </Border>
        <Border>
            <StackPanel Width="auto" Orientation="Horizontal">
                <Label Content="价格" Width="auto"   HorizontalContentAlignment="Center" VerticalAlignment="Center" />
                <!--<GridSplitter BorderBrush="#DDE5F2" BorderThickness="1.1"/>-->

            </StackPanel>
        </Border>
    </StackPanel>
</DataTemplate>
    怎么把月份写出动态的