.NET Maui中如何根据字体大小动态截断Label文本

我有一个包含Label的Grid控件，该Label的字体大小可变，可显示的行数会随字体大小变化——字体越大，可显示行数越少。目前最右侧列的文本被容器部分截断，我希望能根据Label可显示的行数动态截断文本，而非通过显式设置Label的MaxLines和LineBreakMode属性（该方式需固定值，无法适配字体大小变化）。我使用XAML定义UI，也接受C#解决方案。

已尝试的XAML代码及效果（基于.NET Maui 9.0.70，Android设备测试） #

0. 原始XAML #

<Grid BackgroundColor="Orange" WidthRequest="190" HeightRequest="250">
    <Label FontSize="32"
           TextColor="Black"
           Text="This is a label that has a lot of text. It is intentionally long so that it will line wrap and eventually spill over the edge."
           />
</Grid>

效果：文本自动换行，但超出Grid高度的部分被截断，无省略号。

1. 未设置Label高度和MaxLines #

<Grid BackgroundColor="Orange" WidthRequest="190" HeightRequest="250">
    <Label FontSize="32"
           TextColor="Black"
           Text="This is a label that has a lot of text. It is intentionally long so that it will line wrap and eventually spill over the edge."
           LineBreakMode="TailTruncation"
           />
</Grid>

效果：仅渲染1行文本，尾部添加省略号，未利用Grid的垂直空间。

2. 设置HeightRequest #

<Grid BackgroundColor="Orange" WidthRequest="190" HeightRequest="250">
    <Label FontSize="32"
           TextColor="Black"
           Text="This is a label that has a lot of text. It is intentionally long so that it will line wrap and eventually spill over the edge."
           LineBreakMode="TailTruncation"
           HeightRequest="150"
           />
</Grid>

效果：文本垂直居中，但仍仅显示1行，尾部截断。

3. 设置VerticalOptions="Fill" #

<Grid BackgroundColor="Orange" WidthRequest="190" HeightRequest="250">
    <Label FontSize="32"
           TextColor="Black"
           Text="This is a label that has a lot of text. It is intentionally long so that it will line wrap and eventually spill over the edge."
           LineBreakMode="TailTruncation"
           VerticalOptions="Fill"
           />
</Grid>

效果：文本顶部对齐，仅显示1行，尾部截断，未填满Grid垂直空间。

内容的提问来源于stack exchange，提问作者Victor Chelaru