How to disable the weekend dates as blackout dates of the WINUI calendar (SfCalendar)

<Window
    x:Class="Disable_WeekEndDates.MainWindow"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:local="using:Disable_WeekEndDates"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    mc:Ignorable="d"
         xmlns:calendar="using:Syncfusion.UI.Xaml.Calendar">
 
    <Grid>
        <calendar:SfCalendar Name="sfCalendar" ItemPrepared="sfCalendar_ItemPrepared"/>
    </Grid>
    
</Window>

using Microsoft.UI.Xaml;
using Microsoft.UI.Xaml.Controls;
using Microsoft.UI.Xaml.Controls.Primitives;
using Microsoft.UI.Xaml.Data;
using Microsoft.UI.Xaml.Input;
using Microsoft.UI.Xaml.Media;
using Microsoft.UI.Xaml.Navigation;
using Syncfusion.UI.Xaml.Calendar;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Runtime.InteropServices.WindowsRuntime;
using Windows.Foundation;
using Windows.Foundation.Collections;
 
 
namespace Disable_WeekEndDates
{
    /// <summary>
    /// An empty window that can be used on its own or navigated to within a Frame.
    /// </summary>
    public sealed partial class MainWindow : Window
    {
        public MainWindow()
        {
            this.InitializeComponent();
        }
 
        private void sfCalendar_ItemPrepared(object sender, Syncfusion.UI.Xaml.Calendar.CalendarItemPreparedEventArgs e)
        {
            if (e.ItemInfo.ItemType == CalendarItemType.Day &&
    (e.ItemInfo.Date.DayOfWeek == DayOfWeek.Saturday ||
    e.ItemInfo.Date.DayOfWeek == DayOfWeek.Sunday))
            {
                e.ItemInfo.IsBlackout = true;
            }
        }
    }
}