WPF 绑定Binding ElementName Path

说明：{Binding ElementName=grid0, Path=Height}

ElementName=grid0：查找到名为grid0的控件。

, Path=Height：获取名为grid0的控件的Height属性值。

即：将Lb1的属性值设置为grid0控件的Height属性设置值。

    <Grid Name="grid0">
        <Grid>
            <StackPanel Background="AliceBlue">
                <Border HorizontalAlignment="Left" Height="30" Cursor="Hand" Panel.ZIndex="2">
                    <Label Content="返回" HorizontalAlignment="Left" MouseLeftButtonUp="Label_MouseLeftButtonUp"></Label>
                </Border>
                <Border VerticalAlignment="Top" Margin="0,-30,0,0">
                    <Label name="Lb1" Content="123" HorizontalContentAlignment="Center" VerticalContentAlignment="Center" Height="{Binding ElementName=grid0, Path=Height}" FontSize="28" FontFamily="微软雅黑"></Label>
                </Border>
            </StackPanel>
        </Grid>
    </Grid>