How to filter the items in .NET MAUI ListView (SfListView) using MVVM ?

<ContentPage xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
             x:Class="FilteringDemo.Filtering"
             Title="Filtering" 
             xmlns:local="clr-namespace:FilteringDemo" 
             xmlns:syncfusion="clr-namespace:Syncfusion.Maui.ListView;assembly=Syncfusion.Maui.ListView"  
             BackgroundColor="White">
    <ContentPage.Behaviors>
        <local:Behavior/>
    </ContentPage.Behaviors>          
    <syncfusion:SfListView x:Name="listView" 
                       Grid.Row="1"
                       SelectionMode="None"
                       ItemSpacing="5,2.5,5,2.5"
                       ItemsSource="{Binding Items}"
                       Background="#f2f1f2"
                       ItemSize="100">
                <syncfusion:SfListView.ItemTemplate>
                    <DataTemplate x:Name="ItemTemplate">
                        <StackLayout Padding="2" 
                                             HeightRequest="100" 
                                             BackgroundColor="#FFFFFF" >
                            <Grid BackgroundColor ="White" Margin="10,5,10,5" >
                                <Grid.RowDefinitions>
                                    <RowDefinition Height="Auto"/>
                                    <RowDefinition Height="Auto"/>
                                    <RowDefinition Height="30"/>
                                </Grid.RowDefinitions>
                                <Label x:Name="TitleLabel"
                                             LineBreakMode="NoWrap" 
                                             Text="{Binding Title}"
                                             FontAttributes="Bold"  
                                             TextColor="Black" 
                                             FontFamily="RobotoMedium"
                                             FontSize="{OnPlatform Android={OnIdiom Phone=16, Tablet=18}, iOS={OnIdiom Phone=16, Tablet=18},MacCatalyst=18,Default=18}"/>
                                <Label Grid.Row="1" x:Name="DescriptionLabel" 
                                            Text="{Binding Description}" 
                                            TextColor="Teal" 
                                            Padding="0,5,0,0"          
                                            FontFamily="RobotoRegular"
                                            FontSize="{OnPlatform Android={OnIdiom Phone=12, Tablet=14}, iOS={OnIdiom Phone=12, Tablet=14},MacCatalyst=14, Default=12}"/>
                                <StackLayout Grid.Row="2"
                                                       Margin="0,10,0,0" 
                                                       HeightRequest="15"        
                                                       BackgroundColor="#FFE7E8E9" 
                                                       HorizontalOptions="Start"
                                                       VerticalOptions="End">
                                        <Label x:Name="TagLabel" 
                                                      LineBreakMode="NoWrap" 
                                                      Text="{Binding Tag}"  
                                                      FontFamily="RobotoRegular" 
                                                      Margin='{OnPlatform Android="4,0,4,2", Default="4,2,4,2"}' 
                                                      HorizontalOptions="Center" 
                                                      VerticalOptions="Center"
                                                      FontSize="10"  
                                                      TextColor="Black"/>
                                </StackLayout>
                            </Grid>
                        </StackLayout>
                    </DataTemplate>
                </syncfusion:SfListView.ItemTemplate>
            </syncfusion:SfListView>
        </Grid>
    </ContentPage.Content>
</ContentPage>

public class Behavior : Behavior<ContentPage>
{
        SfListView ListView;
        SearchBar SearchBar;
        protected override void OnAttachedTo(ContentPage bindable)
        {
            ListView = bindable.FindByName<SfListView>("listView");
            SearchBar = bindable.FindByName<SearchBar>("filterText");
            SearchBar.TextChanged += SearchBar_TextChanged;
            base.OnAttachedTo(bindable);
        }
        protected override void OnDetachingFrom(ContentPage bindable)
        {
            SearchBar.TextChanged -= SearchBar_TextChanged;
            SearchBar = null;
            ListView = null;
            base.OnDetachingFrom(bindable);
        }
        private void SearchBar_TextChanged(object sender, TextChangedEventArgs e)
        {
            if (ListView.DataSource != null)
            {
                ListView.DataSource.Filter = FilterContacts;
                ListView.DataSource.RefreshFilter();
            }
            ListView.RefreshView();
        }
        private bool FilterContacts(object obj)
        {
            if (SearchBar == null || SearchBar.Text == null)
                return true;
            var taskInfo = obj as TaskInfo;
            return (taskInfo.Title.ToLower().Contains(SearchBar.Text.ToLower())
                || taskInfo.Description.ToLower().Contains(SearchBar.Text.ToLower()));
        }
}