can anyone try this on wpf if this is working

        public void Addtab(string text = "")
        {
            TabItem tabItem = new TabItem();
            this.tabcontrol.Items.Add(tabItem);
            tabItem.IsSelected = true;
            TextEditor textEditor = new TextEditor();
            textEditor.FontFamily = new FontFamily("Segoe UI");
            textEditor.FontSize = 13.0;
            textEditor.Background = new SolidColorBrush(Color.FromRgb(23, 23, 23));
            textEditor.LineNumbersForeground = new SolidColorBrush(Color.FromRgb(128, 128, 128));
            textEditor.BorderBrush = new SolidColorBrush(Color.FromRgb(100, 100, 100));
            textEditor.BorderThickness = new Thickness(1.0, 1.0, 1.0, 1.0);
            textEditor.Foreground = new SolidColorBrush(Color.FromRgb(byte.MaxValue, byte.MaxValue, byte.MaxValue));
            textEditor.ShowLineNumbers = true;
            textEditor.HorizontalScrollBarVisibility = ScrollBarVisibility.Auto;
            textEditor.VerticalScrollBarVisibility = ScrollBarVisibility.Auto;
            textEditor.Style = (base.TryFindResource("TextEditorStyle1") as Style);
            tabItem.Style = (base.TryFindResource("tub") as Style);
            tabItem.Content = textEditor;
            tabItem.Header = "Script_" + (this.tabcontrol.Items.Count + 1).ToString() + ".lua";
            tabItem.IsSelected = true;
            tabItem.Loaded += delegate(object sender, RoutedEventArgs e)
            {
                tabItem.ApplyTemplate();
                System.Windows.Controls.Button button = tabItem.Template.FindName("closebooton", tabItem) as System.Windows.Controls.Button;
                ((button != null) ? button : null).Click += delegate(object btn_sender, RoutedEventArgs btn_e)
                {
                    this.tabcontrol.Items.Remove(tabItem);
                };
            };
            textEditor.Options.EnableHyperlinks = false;
            textEditor.Text = text;
            textEditor.Options.ShowSpaces = false;
            textEditor.Options.ShowTabs = true;
        }