WPF ListView Performance – Booooost für Templates

<ListView 

  Grid.Row="1"

  x:Name="lvLogItems"

  ItemsSource="{Binding Source={StaticResource myList}}"

  ScrollViewer.HorizontalScrollBarVisibility="Disabled"

  ScrollViewer.VerticalScrollBarVisibility="Visible"

  HorizontalContentAlignment="Stretch"

  HorizontalAlignment="Stretch"

  Style="{StaticResource lbResultStyle}"

  ItemContainerStyle="{StaticResource lbResultItemStyle}"        

  ItemTemplate="{StaticResource itemTemplate}">

</ListView>

<DataTemplate x:Key="itemTemplate">      

  <Grid>

    <Grid.RowDefinitions>

      <RowDefinition Height="50" />

      <RowDefinition Height="1" />

    </Grid.RowDefinitions>

    <DockPanel Grid.Row="0">

      <Grid>

        <Grid.ColumnDefinitions>

          <ColumnDefinition Width="30" />

          <ColumnDefinition />

          <ColumnDefinition Width="130"/>

          <ColumnDefinition Width="22"/>

        </Grid.ColumnDefinitions>

        <DockPanel Grid.Column="0" Margin="0,1,0,0" > <!--Background="AliceBlue"-->

          <Image Name="imgStatus" Height="20" VerticalAlignment="Top"/>

        </DockPanel>

        <DockPanel Grid.Column="1" Margin="3,1,0,0"><!--Background="BurlyWood"--> 

          <TextBlock Text="{Binding Path=StatusText}" TextWrapping="Wrap"></TextBlock>              

        </DockPanel>

        <Grid Grid.Column="2">

          <Grid.RowDefinitions>

            <RowDefinition Height="16" />

            <RowDefinition Height="6" />

            <RowDefinition Height="12" />

            <RowDefinition Height="12" />

          </Grid.RowDefinitions>

          <DockPanel>

            <TextBlock Grid.Row="0" Text="Dauer: " FontSize="16" FontWeight="ExtraLight"  />

            <TextBlock Grid.Row="1" Text="{Binding Path=Duration}" FontSize="16" FontWeight="bold"></TextBlock>

          </DockPanel>

          <DockPanel Grid.Row="2">

            <TextBlock Grid.Row="0" Text="Von: " FontSize="11" Width="28" />

            <TextBlock  Text="{Binding Path=StartTime, StringFormat=\{0:MM:dd.yy HH:mm:ss\}}" FontSize="11"></TextBlock>

          </DockPanel>

          <DockPanel Grid.Row="3">

            <TextBlock Grid.Row="0" Text="Bis: " FontSize="11" Width="28" />

            <TextBlock  Text="{Binding Path=EndTime, StringFormat=\{0:MM:dd.yy HH:mm:ss\}}" FontSize="11"></TextBlock>

          </DockPanel>

        </Grid>

        <Image Grid.Column="3" Source="..\Resources\application_view_detail.png" 

          Margin="0,2,3,0"

          Height="16" VerticalAlignment="Top"></Image>

        <Image Grid.Column="3" Source="..\Resources\email.png" 

          Margin="0,20,3,0"

          Height="16" VerticalAlignment="Top"></Image>

      </Grid>

<Style x:Key="lbResultStyle" TargetType="ListView">

  <Setter Property="Margin" Value="0"/>

  <Setter Property="ItemsPanel">

    <Setter.Value>

      <ItemsPanelTemplate >

        <StackPanel IsItemsHost="True" 

            Orientation="Vertical"

            Width="{Binding ElementName=lvResult,Path=ActualWidth}" >

        </StackPanel>

      </ItemsPanelTemplate>

    </Setter.Value>

  </Setter>

</Style>

<Style x:Key="lbResultStyle" TargetType="ListView">

  <Setter Property="Margin" Value="0"/>

  <Setter Property="ItemsPanel">

    <Setter.Value>

      <ItemsPanelTemplate >

        <VirtualizingStackPanel IsItemsHost="True" 

            Orientation="Vertical"

            Width="{Binding ElementName=lvResult,Path=ActualWidth}" >

        </VirtualizingStackPanel>

      </ItemsPanelTemplate>

    </Setter.Value>

  </Setter>

</Style>