如何优化windows phone嵌套列表框？

Question

下面是我的数据源类型

public class Part
{
    public int PartNumber { get; set; }
    public string ar_PartNumber { get; set; }
    public List<PartSuras> PartSuras { get; set; }
    public int PageNumber { get; set; }
    public string ar_PageNumber { get; set; }

}

public class PartSuras
{
    public int SuraID { get; set; }
    public string ar_SuraID { get; set; }

    public string SuraTitle { get; set; }
    public string SuraTitleEn { get; set; }
    public int StartVerseID { get; set; }
    public int PageNumber { get; set; }
    public string ar_PageNumber { get; set; }
}

下面是嵌套的列表框

 <ListBox  Loaded="list_Index_Loaded" Name="list_Index" HorizontalAlignment="Stretch" Margin="-12,-40,-12,0"  VerticalAlignment="Top"  ScrollViewer.VerticalScrollBarVisibility="Disabled">
                    <ListBox.ItemTemplate >
                        <DataTemplate>
                            <StackPanel HorizontalAlignment="Stretch" VerticalAlignment="Top">
                                <Button HorizontalAlignment="Stretch" Width="480" BorderBrush="#FFCADBBD" Margin="0,-12" BorderThickness="0,0,0,2" Background="#FFD2BC70" Foreground="Black" Name="bt_part" Tag="{Binding PageNumber}" Tap="bt_part_Tap" >
                                    <TextBlock HorizontalAlignment="Stretch" TextAlignment="Center">
                                    <Run Text="الجزء "></Run>
                                    <Run Text="{Binding ar_PartNumber}"></Run>
                                    </TextBlock>
                                </Button>
                                <ListBox Name="list_sura" ItemsSource="{Binding PartSuras}" ScrollViewer.VerticalScrollBarVisibility="Disabled">
                                    <ListBox.ItemTemplate>
                                        <DataTemplate>
                                            <Button  HorizontalAlignment="Stretch" Width="480" Margin="0,-12"  BorderThickness="0,0,0,2" Background="#FFE5DCAA" Foreground="Black" Name="bt_part" Tag="{Binding PageNumber}" Tap="bt_part_Tap" >
                                                <Grid Width="430" HorizontalAlignment="Stretch">
                                                    <Grid.ColumnDefinitions>
                                                        <ColumnDefinition></ColumnDefinition>
                                                        <ColumnDefinition></ColumnDefinition>
                                                    </Grid.ColumnDefinitions>
                                                    <TextBlock Grid.Column="0" HorizontalAlignment="Stretch" TextAlignment="Left">
                                                     <Run Text="{Binding ar_SuraID}"></Run>
                                                     <Run Text="-"></Run>
                                                     <Run Text="{Binding SuraTitle}"></Run>
                                                    </TextBlock>
                                                    <TextBlock Grid.Column="1" HorizontalAlignment="Stretch" TextAlignment="Right" Text="{Binding ar_PageNumber}"></TextBlock>
                                                </Grid>

                                            </Button>
                                        </DataTemplate>
                                    </ListBox.ItemTemplate>
                                </ListBox>

这有点慢，只需要3秒就可以构建列表框，-i测量了构建数据源的时间，这是可以的-在Lumia920 (1 GB内存)设备中，我如何优化它？

如果我删除列表框并在后面的代码中创建控件，性能会更好吗？

Answer 1

如果您不需要滚动(您有ScrollViewer.VerticalScrollBarVisibility="Disabled")，请尝试使用ItemsControl，它的性能应该会更好。

Answer 2

外部列表框使用LongListSelector，内部列表框使用ItemsControl。因为LongListSelector比ListBox更优化，因为您不能使用嵌套的长列表选择器，这会导致滚动和虚拟化问题