How to achieve alternate row styling on grid layout view in .NET MAUI ListView (SfListView)?

The .NET MAUI SfListView allows you to assign alternate color for each item in a row based on the SpanCount property. It can be assigned by finding item index of the underlying data object loaded in the grid layout using IValueConverter.

XAML:

<ContentPage xmlns:syncfusion="clr-namespace:Syncfusion.Maui.ListView;assembly=Syncfusion.Maui.ListView">

    <ContentPage.Resources>
        <ResourceDictionary>
            <local:IndexToColorConverter x:Key="IndexToColorConverter"/>
        </ResourceDictionary>
    </ContentPage.Resources>
    <ContentPage.BindingContext>
        <local:ContactsViewModel x:Name="viewModel"/>
    </ContentPage.BindingContext>

    <ContentPage.Content>
        <Grid>
            <Grid.RowDefinitions>
                <RowDefinition Height="*"/>
            </Grid.RowDefinitions>

            <syncfusion:SfListView x:Name="listView" SelectionMode="Multiple" 
                                   ItemSpacing="1" ItemSize="150"
                                   ItemsSource="{Binding Items}">
                <syncfusion:SfListView.ItemsLayout>
                    <syncfusion:GridLayout x:Name="grid" SpanCount="4" />
                </syncfusion:SfListView.ItemsLayout>
                <syncfusion:SfListView.ItemTemplate>
                    <DataTemplate>
                        <ViewCell>
                            <ViewCell.View>
                                <Grid x:Name="grid" RowSpacing="0"
                                      BackgroundColor="{Binding .,Converter={StaticResource IndexToColorConverter},ConverterParameter={x:Reference Name=listView}}">
                                    <Grid.RowDefinitions>
                                        <RowDefinition Height="*" />
                                        <RowDefinition Height="1" />
                                    </Grid.RowDefinitions>
                                    <Grid RowSpacing="0">
                                        <Grid.ColumnDefinitions>
                                            <ColumnDefinition Width="Auto" />
                                        </Grid.ColumnDefinitions>
                                        <Grid Grid.Column="1" RowSpacing="1" Padding="10,0,0,0" VerticalOptions="Center">
                                            <Grid.RowDefinitions>
                                                <RowDefinition Height="*" />
                                                <RowDefinition Height="*" />
                                            </Grid.RowDefinitions>
                                            <Label LineBreakMode="NoWrap" Text="{Binding ContactName}"/>
                                            <Label Grid.Row="1" Grid.Column="0" TextColor="#474747" LineBreakMode="NoWrap" Text="{Binding ContactNumber}">
                                            </Label>
                                        </Grid>
                                    </Grid>
                                </Grid>
                            </ViewCell.View>
                        </ViewCell>
                    </DataTemplate>
                </syncfusion:SfListView.ItemTemplate>
            </syncfusion:SfListView>
        </Grid>
    </ContentPage.Content>
</ContentPage>

C#:

public class IndexToColorConverter : IValueConverter
{
    public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
    {
        var listview = parameter as SfListView;
        var index = listview.DataSource.DisplayItems.IndexOf(value);
        int spanCount = ((Syncfusion.Maui.ListView.GridLayout)listview.ItemsLayout).SpanCount;
        Color CornBlue = Colors.CornflowerBlue;
        Color Blue = Colors.LightBlue;

        if (spanCount % 2 == 1)
        {
            return index % 2 == 0 ? CornBlue : Blue;
        }
        else
        {
            int row = index / spanCount;
            if (row % 2 == 0)
            {
                return index % 2 == 0 ? CornBlue : Blue;
            }
            else
            {
                return index % 2 == 0 ? Blue : CornBlue;
            }
        }
    }

    public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
    {
        throw new NotImplementedException();
    }
}

Output:

View Sample in GitHub

Conclusion

I hope you enjoyed learning how to achieve alternate row styling on grid-layout view based on span count in .NET MAUI ListView.

You can refer to our .NET MAUI ListView feature tour page to know about its other groundbreaking feature representations and documentation, and how to quickly get started for configuration specifications. You can also explore our .NET MAUI ListView example to understand how to create and manipulate data.

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