How to change selected image in .NET MAUI ListView (SfListView)?
You can change the selected item image in .NET MAUI ListView (SfListView) using Converters.
XAML
Binding IsSelected Property and converter to Label Text.
<ContentPage xmlns="http://schemas.microsoft.com/dotnet/2021/maui" xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml" x:Class="ListViewMaui.MainPage" xmlns:local="clr-namespace:ListViewMaui" xmlns:syncfusion="clr- namespace:Syncfusion.Maui.ListView;assembly=Syncfusion.Maui.ListView" BackgroundColor="{DynamicResource SecondaryColor}"> <ContentPage.Resources> <ResourceDictionary> <local:IconColorConverter x:Key="IconColorConverter"/> <local:SelectionIconConverter x:Key="SelectionIconConverter"/> <DataTemplate x:Name="ItemTemplate" x:Key="ItemTemplate" > … <Label Grid.Row="0" Grid.Column="2" Padding='{OnPlatform UWP="0,10,0,0"}' WidthRequest="40" HeightRequest="40" HorizontalOptions="Start" HorizontalTextAlignment="Start" VerticalOptions="Center" VerticalTextAlignment="Center" FontSize="{OnPlatform Android=Large, UWP=Medium, WPF=Medium, iOS=Large, MacCatalyst=Large}" Text="{Binding IsSelected, Converter={StaticResource SelectionIconConverter}}" TextColor="{Binding Path=IsSelected, Converter={StaticResource IconColorConverter}}" FontFamily="{OnPlatform iOS=Sync FontIcons, MacCatalyst=Sync FontIcons, Android=Sync FontIcons.ttf#, UWP=Sync FontIcons.ttf#Sync FontIcons}"/> … </DataTemplate> </ResourceDictionary> </ContentPage.Resources> <syncfusion:SfListView x:Name="listView" Grid.Row="1" AutoFitMode="None" SelectionGesture="Tap" SelectionMode="Multiple" SelectedItems="{Binding SelectedItems}" SelectionBackground ="#E4E4E4" ItemTemplate="{StaticResource ItemTemplate}" ItemSize="65" ItemSpacing="0,0,0,1" IsStickyHeader="True" ItemsSource="{Binding MusicInfo}"> </syncfusion:SfListView> </ContentPage>
C#
Defining IsSelected property in Model with INotifyPropertyChanged.
public class Musiqnfo : INotifyPropertyChanged { private bool isSelected; public bool IsSelected { get { return isSelected; } set { isSelected = value; RaisePropertyChanged("IsSelected"); } } public event PropertyChangedEventHandler PropertyChanged; private void RaisePropertyChanged(String name) { if (PropertyChanged != null) this.PropertyChanged(this, new PropertyChangedEventArgs(name)); } }
Updating the IsSelected value in ListView_SelectionChanged method.
public class SfListViewSelectionBehavior : Behavior<ContentPage> { ListView.SelectionChanged += ListView_SelectionChanged; ListView.SelectionChanged -= ListView_SelectionChanged; private void ListView_SelectionChanged(object sender, ItemSelectionChangedEventArgs e) { if (ListView.SelectionMode == Syncfusion.Maui.ListView.SelectionMode.Multiple) { SelectionViewModel.HeaderInfo = ListView.SelectedItems.Count + " item(s) selected"; for (int i = 0; i < e.AddedItems.Count; i++) { var item = e.AddedItems[i]; (item as Musiqnfo).IsSelected = true; } for (int i = 0; i < e.RemovedItems.Count; i++) { var item = e.RemovedItems[i]; (item as Musiqnfo).IsSelected = false; } } } }
Setting Image based on the IsSelected value in Converter.
public class IconColorConverter : IValueConverter { public object Convert(object value, Type targetType, object parameter, CultureInfo culture) { if ((bool)value) return Color.FromArgb("#1a75ff"); else return Color.FromArgb("#b3b3b3"); } public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture) { throw new NotImplementedException(); } } public class SelectionIconConverter : IValueConverter { public object Convert(object value, Type targetType, object parameter, CultureInfo culture) { if ((bool)value) return "\ue748"; else return "\ue718"; } public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture) { throw new NotImplementedException(); } }
Take a moment to peruse the documentation, to learn more about selection in SfListView with code.
Conclusion
I hope you enjoyed learning how to change selected image 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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