[WPF]DataGridHyperlinkColumn网址过长TextTrimming无效

Posted 2020-08-24

<DataGridHyperlinkColumn Binding="{Binding source}" Header="来源">
    <DataGridHyperlinkColumn.ElementStyle>
        <Style TargetType="{x:Type TextBlock}">
            <Setter Property="VerticalAlignment" Value="Center" />
            <Setter Property="TextTrimming" Value="CharacterEllipsis"/>
        </Style>
    </DataGridHyperlinkColumn.ElementStyle>
</DataGridHyperlinkColumn>

只有VerticalAlignment生效了，TextTrimming并未生效。

实时可视化树如下：

自定义ElementStyle属性，对应的是父TextBlock（上图选中高亮）的Style，而其子TextBlock并未继承其父对应属性

解决方法：

<DataGridTemplateColumn Header="图站">
    <DataGridTemplateColumn.CellTemplate>
        <DataTemplate>
            <TextBlock VerticalAlignment="Center" TextTrimming="CharacterEllipsis">
                <Hyperlink NavigateUri="{Binding siteUrl}">
                    <Run Text="{Binding NavigateUri, RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type Hyperlink}}}"/>
                </Hyperlink>
            </TextBlock>
        </DataTemplate>
    </DataGridTemplateColumn.CellTemplate>
</DataGridTemplateColumn>

效果如顶部图片