如何提高向UI添加控件的速度

我有以下代码，它创建WPF控件，然后以我需要的方式将它们添加到窗口中。它工作得很好，但当试图创建256（x4-两个文本块、组合框、文本框）控件时，需要一段时间才能显示选项卡。窗口加载良好，但我有很多选项卡，当我点击点设置选项卡时，它在显示选项卡之前会滞后一点。它只在我第一次点击选项卡时滞后，每次点击后都会立即响应。

一开始我认为这是一个渲染问题，但经过大量其他研究，我觉得C#/WPF在动态创建一堆对象并将它们添加到表单中方面做得不好。

如果我将项目数量减少到50，它会立即响应，100是一个轻微的滞后，200（256）是一个稍大的滞后，太多了，用户无法接受。

以前遇到过类似问题的任何经验，以及如何解决问题的建议或其他技巧。

提前感谢！韦斯利

public static void pointSetup(VirtualizingStackPanel desc, VirtualizingStackPanel map) //Draws point description and point map table in point setup tab
    {
        StackPanel row;
        TextBlock text;
        TextBox textBox;
        ComboBox comboBox;
        Thickness rowSpacing = new Thickness(0, 0, 0, 5);
        Thickness textSpacing = new Thickness(0, 3, 5, 3);
        List<string> list = new List<string>();
        list.Add("xx");
        for (byte i = 0; i < Global.currentZonesToMap; i++)
        {
            list.Add("Zone  " + (i + 1));
        }
        for (short i = 0; i < 256; i++)
        {
            //desc
            row = new StackPanel();
            row.Margin = rowSpacing;
            row.Orientation = Orientation.Horizontal;
            text = new TextBlock();
            text.Text = "Point " + (i + 1);
            text.Margin = textSpacing;
            text.Width = 50;
            textBox = new TextBox();
            textBox.MaxLength = 28;
            textBox.Text = "";
            textBox.Width = 270;
            row.Children.Add(text);
            row.Children.Add(textBox);
            desc.Children.Add(row);
            //map
            row = new StackPanel();
            row.Margin = rowSpacing;
            row.Orientation = Orientation.Horizontal;
            text = new TextBlock();
            text.Text = "Point " + (i + 1);
            text.Margin = textSpacing;
            text.Width = 50;
            comboBox = new ComboBox();
            comboBox.ItemsSource = list;
            comboBox.Width = 270;
            row.Children.Add(text);
            row.Children.Add(comboBox);
            map.Children.Add(row);
        }
    }

新代码（使用DataTemplate和ItemsControl）

    public class DevicePoint
    {
        public string desc { get; set; }
        public int zone { get; set; }
        public List<string> zones { get; set; }
    }
    //Initialized all variables and displays UI (constructor)
    public Dispatcher()
    {
        InitializeComponent();
        List<string> opts = new List<string>();
        opts.Add("xx");
        for (byte i = 0; i < Global.currentZonesToMap; i++)
        {
            opts.Add("Zone  " + (i + 1));
        }
        List<DevicePoint> points = new List<DevicePoint>();
        for (short i = 0; i < 256; i++)
            points.Add(new DevicePoint() { desc = "Point " + (i + 1), zone = 0, zones = opts });
        pointDesc.ItemsSource = points;
        pointZoneMap.ItemsSource = points;
        ... other stuff here ...
    }
        <StackPanel>
                <TextBlock Margin="10" FontWeight="Bold" HorizontalAlignment="Center" Text="Point Descriptions" />
                <ScrollViewer Width="360" Margin="30,10,30,10" MaxHeight="405">
                    <ItemsControl Name="pointDesc" Margin="5">
                        <ItemsControl.ItemTemplate>
                            <DataTemplate>
                                <StackPanel VirtualizingStackPanel.IsVirtualizing="True" Margin="0,0,0,5" Orientation="Horizontal">
                                    <TextBlock Margin="0,3,5,3" Width="50" Text="{Binding desc}" />
                                    <TextBox MaxLength="28" Width="270" Text="{Binding desc}" />
                                </StackPanel>
                            </DataTemplate>
                        </ItemsControl.ItemTemplate>
                    </ItemsControl>
                </ScrollViewer>
            </StackPanel>
            <StackPanel Grid.Column="1">
                <TextBlock Margin="10" FontWeight="Bold" HorizontalAlignment="Center" Text="Point - Zone Map" />
                <ScrollViewer Width="360" Margin="30,10,30,10" MaxHeight="405">
                    <ItemsControl Name="pointZoneMap" Margin="5">
                        <ItemsControl.ItemTemplate>
                            <DataTemplate>
                                <StackPanel VirtualizingStackPanel.IsVirtualizing="True" Margin="0,0,0,5" Orientation="Horizontal">
                                    <TextBlock Margin="0,3,5,3" Width="50" Text="{Binding desc}" />
                                    <ComboBox Width="270" ItemsSource="{Binding zones}" SelectedIndex="{Binding zone}" />
                                </StackPanel>
                            </DataTemplate>
                        </ItemsControl.ItemTemplate>
                    </ItemsControl>
                </ScrollViewer>
            </StackPanel>