ThemeResolutionService.ApplicationThemeName = "Windows11"

        Dim UserGroup As New DescriptionTextListDataItem
        With UserGroup
            .Text = "Admins"
            '.Font = New Font("Microsoft Sans Serif", 9.75, FontStyle.Bold)
            .DescriptionText = "System Administrations Group"
        End With
        Me.RadListControl1.Items.Add(UserGroup)
        Me.RadListControl1.ItemHeight = 50

        public RadForm1()
        {
            InitializeComponent(); 

            for (int i = 0; i < 20; i++)
            {
                this.radListControl1.Items.Add("Item" + i);
            }

            this.radListControl1.EnableAlternatingItemColor = true;
            this.radListControl1.SelectionMode = SelectionMode.MultiSimple;
        }

        private void radButton1_Click(object sender, EventArgs e)
        {
            this.radListControl1.SelectAll();
        }

            this.radListControl1.SelectAll();
            DefaultListControlStackContainer viewElement = this.radListControl1.ListElement.ViewElement as DefaultListControlStackContainer;
            if (viewElement != null)
            {
                viewElement.ForceVisualStateUpdate();
            }
        }

        public RadForm1()
        {
            InitializeComponent();

            this.radListControl1.ItemHeight = 30;
        }

        private void radButton1_Click(object sender, EventArgs e)
        {
            this.radListControl1.ScrollToItem(this.radListControl1.Items.First);
            this.radListControl1.SelectedItem = this.radListControl1.Items.First;
        }

        private void radButton2_Click(object sender, EventArgs e)
        {
            this.radListControl1.ScrollToItem(this.radListControl1.Items.Last);
            this.radListControl1.SelectedItem = this.radListControl1.Items.Last;
        }

        private void RadForm1_Load(object sender, EventArgs e)
        {
            List<Rivi> tmpList = new List<Rivi>();
            tmpList.Add(new Rivi() { Key = 1, Code = "1st" });
            tmpList.Add(new Rivi() { Key = 2, Code = "2nd" });
            tmpList.Add(new Rivi() { Key = 3, Code = "3rd" });
            tmpList.Add(new Rivi() { Key = 4, Code = "4th" });
            tmpList.Add(new Rivi() { Key = 5, Code = "5th" });

            this.radListControl1.ValueMember = "Key";
            this.radListControl1.DisplayMember = "Code";
            this.radListControl1.DataSource = tmpList;
        }

        public class Rivi
        {
            public int Key { get; set; }

            public string Code { get; set; }
        }

            this.radListControl1.ScrollToItem(this.radListControl1.Items.Last);
            this.radListControl1.ListElement.InvalidateMeasure(true);
            this.radListControl1.ListElement.UpdateLayout();
            this.radListControl1.SelectedItem = this.radListControl1.Items.Last;