How do I make this snippet virtualized?
<ScrollViewer Grid.Column="1" Name="LogScroller"> <r:NoInheritanceContentControl> <ListBox Background="Black" ItemsSource="{Binding Path=ActiveLog}" > <ListBox.ItemTemplate> <DataTemplate> <Grid Background="Black"> <Grid.ColumnDefinitions> <ColumnDefinition Width="200"></ColumnDefinition> <ColumnDefinition Width="*"></ColumnDefinition> </Grid.ColumnDefinitions> <Grid.RowDefinitions> <RowDefinition></RowDefinition> <RowDefinition></RowDefinition> </Grid.RowDefinitions> <TextBlock Grid.Column="0" Grid.Row="0" Foreground="White"> <TextBlock >Date:</TextBlock> <TextBlock Text="{Binding Path=LogDate}"/> </TextBlock> <TextBlock Grid.Column="1" Grid.Row="0" Foreground="White"> <TextBlock >Severity:</TextBlock> <TextBlock Text="{Binding Path=Severity}"/> </TextBlock> <TextBlock Grid.Column="0" Grid.ColumnSpan="2" Grid.Row="1" Foreground="LightGray" Text="{Binding Path=Message}"></TextBlock> </Grid> </DataTemplate> </ListBox.ItemTemplate> <ListBox.Template> <ControlTemplate> <StackPanel Background="Black" IsItemsHost="True" > </StackPanel> </ControlTemplate> </ListBox.Template> </ListBox> </r:NoInheritanceContentControl> </ScrollViewer>
Your code sample does not virtualize because you are forcing the use of a StackPanel. You have to use a VirtualizingStackPanel.
StackPanel
VirtualizingStackPanel
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