Медленное взаимодействие с пользовательским интерфейсом, когда не виртуализированные элементы

Question

У нас есть довольно большое приложение WPF Dashboard, которое использует решение ListView / Gridview для отображения около 400 элементов, представленных в ячейках.

Каждая ячейка имеет ContentControl With ContentTemplateSelector, который меняет шаблон в зависимости отСвойство для связанного объекта данных.

Ранее мы использовали это при обычной виртуализации ListView, но мои пользователи жалуются, что процесс прокрутки довольно скудный, и я согласен.

Когда мы отключаем виртуализациювключив группировку сом или ручную деактивацию виртуализации, прокрутка становится такой же плавной, как эквивалентная таблица Excel (именно это мы и создаем для замены приложения).Но наши взаимодействия внутри таблицы данных становятся ужасно медленными.Это означает, что когда мы, например, используем контекстное меню в шаблоне и щелкаем правой кнопкой мыши, контекстное меню появляется за 2-3 секунды.То же самое С помощью щелчка по гиперссылке внутри шаблона.Требуется 2-3 секунды, прежде чем что-то произойдет.

У вас есть какие-нибудь советы, как это отладить?

Прикрепленное изображение панели инструментов:

Пример наиболее часто используемой таблицы данных для элемента в ячейке:

    <Grid DataContext="{Binding DtoParent, ElementName=userControl}" d:DataContext="{Binding DtoParent,Source={StaticResource ucVm}}" >
    <Grid.ContextMenu>
        <ContextMenu>
            <MenuItem Header="test"/>
        </ContextMenu>
    </Grid.ContextMenu>
    <Grid DataContext="{Binding Objekt}">
        <ScrollViewer ScrollChanged="dataTemplatePresentasjonKampanjeDetalj_ScrollViewer_ScrollChanged" PreviewMouseWheel="dataTemplatePresentasjonKampanjeDetalj_ScrollViewer_PreviewMouseWheel">
            <Border BorderBrush="DarkGray" BorderThickness="1" Padding="2" CornerRadius="5" MouseMove="Border_MouseMove" PreviewMouseDown="Border_PreviewMouseDown" Tag="{Binding}">
                <Grid>
                    <Grid.ContextMenu>
                        <ContextMenu>
                            <MenuItem Header="Kopier hele kampanjedetaljen" x:Name="miKampanjeDetaljCopy" Click="miKampanjeDetaljCopy_Click" Tag="{Binding}" />
                            <MenuItem Header="Lim inn varegruppe" x:Name="miLimInnVareGruppe" Click="miLimInnVareGruppe_Click" Tag="{Binding}">
                                <MenuItem.Style>
                                    <Style TargetType="MenuItem" BasedOn="{StaticResource {x:Type MenuItem}}">
                                        <Setter Property="IsEnabled" Value="True" />
                                        <Style.Triggers>
                                            <DataTrigger Binding="{Binding DtoVersjonKampanje.Låst}" Value="True">
                                                <Setter Property="IsEnabled" Value="False" />
                                            </DataTrigger>
                                        </Style.Triggers>
                                    </Style>
                                </MenuItem.Style>
                            </MenuItem>
                        </ContextMenu>
                    </Grid.ContextMenu>
                    <Grid.RowDefinitions>
                        <RowDefinition Height="auto" />
                        <RowDefinition />
                    </Grid.RowDefinitions>

                    <Grid.Style>
                        <Style TargetType="Grid">
                            <Style.Triggers>
                                <DataTrigger Binding="{Binding DtoVersjonKampanjeDetalj.ErEkaFerdig}" Value="True">
                                    <Setter Property="Background" Value="LightGreen" />
                                </DataTrigger>
                            </Style.Triggers>
                        </Style>
                    </Grid.Style>
                    <StackPanel Orientation="Horizontal">
                        <Viewbox Width="16" Height="16" Visibility="{Binding DtoVersjonElement.KunNett, Converter={StaticResource booleanToVisibilityConverter}}" ToolTip="Gjelder kun for Nettapotek">
                            <Rectangle Width="16" Height="16">
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                                        <DrawingBrush.Drawing>
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                            </Rectangle>
                        </Viewbox>

                        <Viewbox Width="16" Height="16" Visibility="{Binding DtoVersjonElement.AvvikendePeriode, Converter={StaticResource booleanToVisibilityConverter}}" ToolTip="Avvikende periode OK">
                            <Rectangle Width="16" Height="16">
                                <Rectangle.Fill>
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                        <Viewbox Width="16" Height="16" Visibility="{Binding AvvikendePeriodeValidertFeil, Converter={StaticResource booleanToVisibilityConverter}}" ToolTip="Avvikende periode mangler, eller er feil utfyllt">
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                                <Rectangle.Fill>
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                        <customControls:ccAntallProdukterVisning ToolTip="Antall produkter" />
                        <!--<Button Content="{Binding DtoVersjonKampanjeDetalj.Tittel}"/>-->

                    </StackPanel>

                    <ItemsControl ItemsSource="{Binding ObsCollVareTittelVisning}" VerticalAlignment="Stretch" Grid.Row="1"  Grid.Column="0" VirtualizingPanel.IsVirtualizing="False"
                                  HorizontalAlignment="Stretch" Margin="4" ItemTemplate="{StaticResource dataTemplateVareTittelVisningeHyperLink}">
                    </ItemsControl>
                    <Image Source="/WpfVFAKampanjeMaster;component/Assets/lock.png" Height="20" ToolTip="Denne kampanjen er låst for redigering"
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                            <Style TargetType="Image">
                                <Setter Property="Visibility" Value="Collapsed" />
                                <Style.Triggers>
                                    <DataTrigger Binding="{Binding DtoVersjonKampanje.Låst}" Value="True">
                                        <Setter Property="Visibility" Value="Visible" />
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        </ScrollViewer>
    </Grid>


<DataTemplate x:Key="dataTemplateVareTittelVisningeHyperLink" DataType="presentasjon:DtoKampanjeDetaljVareTittelVisning">
    <TextBlock Margin="4,0">
        <TextBlock.ContextMenu>
            <ContextMenu>
                <MenuItem Header="Kopier varegruppe" x:Name="miKopierVareGruppe" Tag="{Binding}" Click="miKopierVareGruppe_Click" />
            </ContextMenu>
        </TextBlock.ContextMenu>
        <Hyperlink Tag="{Binding}" x:Name="hyperLinkVareTittelVisning" Click="hyperLinkVareTittelVisning_Click">
            <Hyperlink.ToolTip>
                <ItemsControl ItemsSource="{Binding ObsCollTilbud}">
                    <ItemsControl.ItemTemplate>
                        <DataTemplate>
                            <TextBlock Text="{Binding Navn}" />
                        </DataTemplate>
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</DataTemplate>

Answer 1

Хорошо, так много изменений нужно, чтобы получить производительность.

Теперь мы приблизились к приемлемой производительности.

1. Удалите все текстовые блоки с гиперссылками.

2. Измените UserControl на CustomControl

3.И тот, который действительно имел большое значение:

public class CustomListView : ListView
{
    protected override void OnIsKeyboardFocusWithinChanged(DependencyPropertyChangedEventArgs e)
    {
        //huge performance hit if next line is not commented out
        //base.OnIsKeyboardFocusWithinChanged(e);
    }
}

На самом деле у нас было около 45 секунд времени начальной загрузки.Но так как у нас есть окно прогресса для начальной загрузки, это должно быть приемлемым.

Но теперь приложение быстро и отзывчиво после начальной загрузки.

Поскольку мы используем контракты обратного вызова с сервера WCF для передачи всех инкрементальных изменений данных всем подключенным клиентам, оно стало действительно хорошим приложением для Dashboard.