C# 如何使单元格在WPF网格中向右或向左对齐时具有全宽

我正在WPF中设计一些网格，希望显示向右对齐的数字，但当我设置HorizontalAlignment=right时，单元格本身并没有使用所有可用宽度，因此边框根据内容绘制一半。看附件中的图片

代码是：

<Grid Width="620" Name="tblTaxBalance">
    <Grid.ColumnDefinitions>
        <ColumnDefinition Width="110"/>
        <ColumnDefinition Width="350"/>
        <ColumnDefinition Width="80" Style="{StaticResource CellRightAlign}"/>
        <ColumnDefinition Width="80" Style="{StaticResource CellRightAlign}"/>
    </Grid.ColumnDefinitions>
    <Grid.RowDefinitions>
        <RowDefinition Height="Auto"/>
        <RowDefinition Height="Auto"/>
    </Grid.RowDefinitions>

    <!-- row 1 -->
    <Label Grid.RowSpan="2" Grid.Row="0" Style="{StaticResource TaxTableCellStyle}" BorderThickness="1">Тайлангийн төрөл</Label>
    <Label Grid.RowSpan="2" Grid.Row="0" Grid.Column="1" Style="{StaticResource TaxTableCellStyle}" BorderThickness="0,1,1,1">Татварын төрөл</Label>
    <Label Grid.ColumnSpan="2" Grid.Row="0" Grid.Column="2" Style="{StaticResource TaxTableCellStyle}" BorderThickness="0,1,1,1">Эцсийн үлдэгдэл /мян. төг/</Label>

    <!-- row 2 -->
    <Label Grid.RowSpan="2" Grid.Row="1" Grid.Column="2" Style="{StaticResource TaxTableCellStyle}" BorderThickness="0,0,1,1" HorizontalAlignment="Right">Дутуу</Label>
    <Label Grid.RowSpan="2" Grid.Row="1" Grid.Column="3" Style="{StaticResource TaxTableCellStyle}" BorderThickness="0,0,1,1">Илүү</Label>
</Grid>

Тайлангийн төрөл
Татварын төрөл
Эцсийн үлдэгдэл /мян. төг/
Дутуу
Илүү

使用水平对齐拉伸并将流动方向从右设置为左

就像这样：

<Label Grid.RowSpan="2" Grid.Row="1" Grid.Column="2" Style="{StaticResource TaxTableCellStyle}" BorderThickness="0,0,1,1" HorizontalAlignment="Stretch" FlowDirection="RightToLeft">Дутуу</Label>

<代码>ааа

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您可以显示您的样式CellAlignRight吗？您可以忽略CellAlignRight，它具有HorizontalAlignment=“Right”。谢谢，FlowDirection=“RightToLeft”修复了所有问题。