Question Problem with expander in collectionView

[Bfluxus]

Hello everyone ,

I am new in MAUI developement and i'm doing a desktop app.
I describe my problem here Problem with collectionView that content mct: expander.

Did someone have an idea ?

Thanks for your time

 

[jmcilhinney]

If you want us to help then describe your problem in full to us. Don't expect us to go off to some other site and read about it there.

 

[Bfluxus]

Hello

I'm sorry
Here is my question properly asked :

I'm working on MAUI C# application desktop.I need to put many expander in collectionView.

Here is my code in view :

 <CollectionView x:Name="question" ItemsSource="{Binding Audit.Questions}" IsVisible="false"  VerticalScrollBarVisibility="Default">
     <CollectionView.ItemTemplate>
         <DataTemplate x:DataType="model:Question">
             <VerticalStackLayout>
                 <ScrollView >
                     <mct:Expander x:Name="questionz" IsExpanded="false">
                         <mct:Expander.Header>
                             <Grid BackgroundColor="LightGray" HeightRequest="100" MinimumHeightRequest="100">
                                 <Label Text="{Binding Intitule}" FontSize="16" Grid.Column="0"></Label>
                                 <Image  Source="exclamation_mark.png"
                                     HeightRequest="20"
                                     TranslationX="380"
                                     ToolTipProperties.Text="{Binding RappelJuridique}"/>
                             </Grid>
                         </mct:Expander.Header>
                         <mct:Expander.Content>
                             <StackLayout
                             MinimumHeightRequest="150">
                                 <HorizontalStackLayout   
                                 >
                                     <RadioButton
                                              x:Name="conforme"
                                              Content="Conforme"
                                              IsChecked="{Binding IsConforme}"
                                              Value="1"
                                              CheckedChanged="RadioButton_CheckedChanged">
                                     </RadioButton>
                                     <RadioButton
                                              x:Name="nonConforme"
                                              Content="Non conforme"
                                              IsChecked="{Binding IsConforme}"
                                              Value="0"
                                              CheckedChanged="RadioButton_CheckedChanged">
                                     </RadioButton>
                                     <RadioButton
                                              x:Name="nonFait"
                                              Content="non Fait"
                                              IsChecked="{Binding IsConforme}"
                                              Value=""
                                              CheckedChanged="RadioButton_CheckedChanged">
                                     </RadioButton>
                                 </HorizontalStackLayout>
                                 <Entry Placeholder="Commentaire" Text="{Binding Commentaire}" HeightRequest="100" ></Entry>
                             </StackLayout>
                         </mct:Expander.Content>
                     </mct:Expander>
                 </ScrollView>
             </VerticalStackLayout>
         </DataTemplate>
     </CollectionView.ItemTemplate>
 </CollectionView>

Behavior of last expanders is not OK

In this case I load 18 expanders in the collectionview.

Did someone have idea ?
Thanks by advance and sorry for my first post.

 

[Skydiver]

What happens if you don't use a ScrollView?

 

[Bfluxus]

expanders doesn't expand from the 9th expander to the end

 

[Skydiver]

Is there physical screen space to accommodate those opened expanders? If not, is the expectation for the other expanders to collapse? Or is the expectation for a scroll bar to appear inside the collection view that spans all the expanders?

 

[Bfluxus]

the expectation for a scroll bar to appear inside the collection view that spans all the expanders.

 

[Skydiver]

First, I don't think the ScrollView should be within the template. By declaring that there, you are saying that each item should have its own scrollbar.

Next, I think this open bug regarding the collection view is relevant to your situation:

CollectionView shows no ScrollBar · Issue #11369 · dotnet/maui

Description When filling a CollectionView with more data than fits on the screen I can scroll CollectionView, but no ScrollBar is shown. Not even if I set the *ScrollBarVisibility to Always or just...

github.com