Sorting the listview items along with grouping

The SfListView allows sorting the items along with grouping by adding the DataSource.GroupDescriptors and the DataSource.SortDescriptors with required property name.

Sorting with grouping by year

Sorting the items along with grouping by using KeySelector based on retuning the year value of the data-time property.

<ContentPage xmlns:syncfusion="clr-namespace:Syncfusion.ListView.XForms;assembly=Syncfusion.SfListView.XForms"
             xmlns:data="clr-namespace:Syncfusion.DataSource;assembly=Syncfusion.DataSource.Portable">
  <ContentPage.Content>
    <syncfusion:SfListView x:Name="listView" ItemsSource="{Binding Items}" ItemSize="50">
      <syncfusion:SfListView.GroupHeaderTemplate>
        <DataTemplate>
		  <Grid>
          <Label Text= "{Binding Key}" BackgroundColor="Teal" FontAttributes="Bold" TextColor="White"/>
		  </Grid>
        </DataTemplate>
      </syncfusion:SfListView.GroupHeaderTemplate>
    </syncfusion:SfListView>
  </ContentPage.Content>
</ContentPage>

Sorting with grouping by month and year

Sorting the items along with grouping by using KeySelector based on retuning the month and year value of the data-time property.

<ContentPage xmlns:syncfusion="clr-namespace:Syncfusion.ListView.XForms;assembly=Syncfusion.SfListView.XForms"
             xmlns:data="clr-namespace:Syncfusion.DataSource;assembly=Syncfusion.DataSource.Portable">
  <ContentPage.Content>
    <syncfusion:SfListView x:Name="listView">
      <syncfusion:SfListView.DataSource>
        <data:DataSource>
        <data:DataSource.GroupDescriptors>
            <data:GroupDescriptor PropertyName="ContactName" />
          </data:DataSource.GroupDescriptors>
          <data:DataSource.SortDescriptors>
            <data:SortDescriptor PropertyName="ContactName" Direction="Ascending"/>
          </data:DataSource.SortDescriptors>
        </data:DataSource>
      </syncfusion:SfListView.DataSource>
    </syncfusion:SfListView>
  </ContentPage.Content>
</ContentPage>

To know more about the sorting in ListView, please refer our documentation here.