CODEWITHSUNDEEP
c#xamlwindows-runtimewinrt-xaml
David Rector
David Rector

Reputation: 1026

Why is ActualHeight not exactly what I specified for Height for a Grid in WinRt XAML?

No, I am not having trouble with ActualHeight being set to zero like so many others. In my Windows Store app (WinRT), I see this in the debugger:

ActualHeight | 50.714286804199219 | double

But in my XAML, I have this specified for this element:

<Grid Grid.Column="0" Grid.ColumnSpan="2" x:Name="Headers" Background="{ThemeResource MyAppTitlebarBrush}" Margin="51,0,0,0" VerticalAlignment="Top" HorizontalAlignment="Stretch">
    <Grid.RowDefinitions>
        <RowDefinition Height="51"/>
        <RowDefinition Height="Auto"/>
    </Grid.RowDefinitions>
    <Grid Grid.Row="0" Height="51">
        ...

Apparently, something is messing with the numbers but I can't figure out what. The really unfortunate part is that I can't rely on my specified value and therefore can adjust the margin of some other element based on what I think should be a top margin of 51.

I'm not sure where to start debugging this or what I could do that would screw this up. This isn't because the code is catching a height change during an animation. What could it be?

Upvotes: 2

Views: 72

Answers (1)

Tam&#225;s Deme
Tam&#225;s Deme

Reputation: 2228

Set UseLayoutRounding to false, and it should solve it.

Edit: I didn't test it, that's why the should. Also you shouldn't compare doubles with ==, always use an epsilon for that. (Like Math.Abs(double1-double2) < 0.005)

Upvotes: 1

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