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How to customize Xamarin.Forms listview group header template in MVVM ?

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You can customize the GroupHeaderTemplate using the ViewModel property. Here, GroupHeaderTemplate loaded elements customized to shown or hidden by binding the ViewModel property. This will automatically refresh the UI when the ViewModel property is changed at runtime.

public class ContactsViewModel : INotifyPropertyChanged
    private bool isLabelVisible = false;
    public bool IsLabelVisible
        get { return isLabelVisible; }
            isLabelVisible = value;


<DataTemplate x:Name="GroupHeaderTemplate"  x:Key="GroupHeaderTemplate">
                    <ColumnDefinition Width="30" />
                    <ColumnDefinition Width="*" />
                    <ColumnDefinition Width="40" />
                <Image x:Name="NormalImage" Grid.Column="0" HorizontalOptions="Center"
                        Source="{Binding IsExpand, Converter={StaticResource BoolToImageConverter}}"
                <Label x:Name="label" Text="{Binding Key}" Grid.Column="1" 
                        IsVisible="{Binding Path=BindingContext.IsLabelVisible,
                                         Source={x:Reference listView}}"/>


Click here to download the sample.



I hope you enjoyed learning about how to customize Xamarin.Forms listview group header template in MVVM.

You can refer to our Xamarin Listview feature tour page to know about its other groundbreaking feature representations and documentation, and how to quickly get started for configuration specifications.

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