MAUI: VerticalStackLayout hides the chart

[mimeie]

Hi

I have a problem in .NET MAUI (newest version).

This works fine:
<ScrollView> <lvc:CartesianChart x:Name="myChart" /> </ScrollView>

this hides the whole chart:
<VerticalStackLayout> <ScrollView> <lvc:CartesianChart x:Name="myChart" /> </ScrollView> </VerticalStackLayout>

I cannot find any reason why it is like this. The same happens also in ContentViews.

Thanks for helping.

[beto-rodriguez]

Hi, the chart has no size. Because the chart is inside a VerticalStackLayout, you must define the size of the chart so the stack layout can do its job.

Setting the HeightRequest property will fix your issue.

<lvc:CartesianChart x:Name="myChart" HeightRequest="300" />

[davidortinau]

@mimeie in addition to what @beto-rodriguez posted, if you put a ScrollView inside a VerticalStackLayout it will probably take up as much space as it can since VerticalStackLayout doesn't constrain its children. This is a different behavior from Xamarin.Forms where layouts did extra calculations based on children.

If you really need a ScrollView inside a VerticalStackLayout then you must give that ScrollView a size.