How to Add Grouping and Incremental Loading Support for a GridView in UWP

Question

Currently I'm able to perform grouping using a CollectionViewSource instance that is being binded to a GridView ItemSource. All is working as aspected but I need to add Incremental Loading Support, and I managed to do this in other context using IncrementalLoadingCollection, but I'm not sure if this can be done together without making any UI tweaks.

Currently my code is looking like this :

<GridView
                    x:Name="test"
                          Margin="18,20,0,0"
                          Grid.Row="3"
                          Loaded="All_GridView_Loaded"
                          SelectionMode="Single"
                          ScrollViewer.VerticalScrollBarVisibility="Hidden"
                          HorizontalAlignment="Stretch">
                    <GridView.GroupStyle>
                        <GroupStyle>
                            <GroupStyle.HeaderTemplate>
                                <DataTemplate x:DataType="someType">
                                    <TextBlock Text="{Binding Key}"/>
                                </DataTemplate>
                            </GroupStyle.HeaderTemplate>
                        </GroupStyle>
                    </GridView.GroupStyle>
                    <GridView.ItemTemplate>
                        <DataTemplate x:DataType="someType" x:DefaultBindMode="OneWay">


                           .........
                  </DataTemplate>
                    </GridView.ItemTemplate>
                </GridView>

And the code behind for binding :

 var cvs = new CollectionViewSource { IsSourceGrouped = true };
     cvs.Source = some list ....;

     gridView.ItemsSource = cvs.View;

Why does this have tags other than uwp? Isn't Incrementalloadingcollection unique to uwp? — Andy, Commented Jun 21, 2019 at 18:55
@Andy maybe there are other ways of doing it, yes incrementalloadingcollection is uwp specific, but its not mandatory for me, I just try to find out a solution — Radu Olteanu, Commented Jun 21, 2019 at 18:58

user11639555user11639555 · Accepted Answer · 2019-06-22 16:26:55Z

1

Try use MVVM Helpers library by James Montemagno, it has Grouping and ObservableRangeCollection of which you asked for. To see a quick demo watch his video. Or browse on Project github

answered Jun 22, 2019 at 16:26

user11639555

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