在 WPF 中如何將 Label 的 Content 屬性繫結到父容器的 Width 屬性？

Good Question...

<Grid Width="500" Name="widthProvider">

    <Label  Height="28" Name="label1" Width="203">

        <Label.Content>

            <Binding Path="Width">

                <Binding.RelativeSource>

                    <RelativeSource Mode="FindAncestor" AncestorType="Grid" AncestorLevel="1"/>

                </Binding.RelativeSource>

            </Binding>

        </Label.Content>

    </Label>

</Grid>