如何绑定为ItemsControl的子级的ListBox的ItemsSource？

Question

假设我有一个“视图/页面”，如下所示：

Category1     Category2     .........     Category(n)

Tile1         Tile1                       Tile1
Tile2         Tile2                       Tile2
.....         .....                       .....
.....         .....                       .....
Tile(n)       Tile(n)                     Tile(n)

用于创建上述OutPut的XAML：

<ItemsControl ItemsSource="{Binding MenuCategories}" >

    <ItemsControl.ItemsPanel>
        <ItemsPanelTemplate>
            <StackPanel IsItemsHost="True" Orientation="Horizontal" />
        </ItemsPanelTemplate>
    </ItemsControl.ItemsPanel>

    <ItemsControl.ItemTemplate>
        <DataTemplate>
            <Grid Height="500">
                <Grid.RowDefinitions>
                    <RowDefinition Height="Auto" />
                    <RowDefinition Height="*" />
                </Grid.RowDefinitions>

                <TextBlock Text="{Binding Title}" FontSize="30" />

                <ListBox Grid.Row="1" x:Name="lst"
                         ItemsSource="{Binding ??????}" >

                    <ListBox.ItemsPanel>
                        <ItemsPanelTemplate>
                            <WrapPanel IsItemsHost="True" Orientation="Vertical" MaxHeight="{Binding ElementName=lst, Path=ActualHeight}"/>
                        </ItemsPanelTemplate>
                    </ListBox.ItemsPanel>

                    <ListBox.Resources>
                        <Style TargetType="{x:Type ListBoxItem}">
                            <Setter Property="Width" Value="250" />
                            <Setter Property="Height" Value="125" />
                            <Setter Property="Margin" Value="2.5" />
                            <Setter Property="Padding" Value="2.5" />
                            <Setter Property="Background" Value="{Binding DataContext.Background, RelativeSource={RelativeSource Mode=FindAncestor, AncestorType={x:Type ListBox}}, Converter={StaticResource stringToBrushConverter}}" />
                            <Setter Property="Foreground" Value="White" />
                            <Setter Property="VerticalContentAlignment" Value="Bottom" />
                            <Style.Triggers>
                                <Trigger Property="IsSelected" Value="True">
                                    <Setter Property="Foreground" Value="{Binding DataContext.Background, RelativeSource={RelativeSource Mode=FindAncestor, AncestorType={x:Type ListBox}}, Converter ={StaticResource stringToBrushConverter}}" />
                                </Trigger>
                            </Style.Triggers>
                        </Style>
                    </ListBox.Resources>

                    <ListBox.ItemTemplate>
                        <DataTemplate>
                            <StackPanel Orientation="Horizontal" Height="125" Width="250">
                                <Path Data="{Binding DataContext.ImageData, RelativeSource={RelativeSource Mode=FindAncestor, AncestorType={x:Type ListBoxItem}}}"  VerticalAlignment="Center" 
                                      Stretch="Uniform" Fill="{Binding Path=Foreground, RelativeSource={RelativeSource AncestorType={x:Type ListBoxItem}}}"
                                      Width="68" Height="68" Margin="10" RenderTransformOrigin="0.5,0.5">
                                    <Path.RenderTransform>
                                        <TransformGroup>
                                            <TransformGroup.Children>
                                                <RotateTransform Angle="0" />
                                                <ScaleTransform ScaleX="1" ScaleY="1" />
                                            </TransformGroup.Children>
                                        </TransformGroup>
                                    </Path.RenderTransform>
                                </Path>
                                <TextBlock Text="{Binding Title, Converter={StaticResource spaceToNewLineConverter}}" VerticalAlignment="Top" 
                                           Margin="40,10,10,10" FontSize="24" Foreground="{Binding Path=Foreground, RelativeSource={RelativeSource AncestorType={x:Type ListBoxItem}}}"/>
                            </StackPanel>
                        </DataTemplate>
                    </ListBox.ItemTemplate>

                </ListBox>
            </Grid>
        </DataTemplate>
    </ItemsControl.ItemTemplate>
</ItemsControl>

但是问题是我不知道ListBox的ItemsSource的绑定。 因此，我没有得到如上所示的输出。

这是我的数据库表的样子：

Answer 1

你可以简单地绑定到Design_Master_Category的那家商店收集Design_Master_TileItems ，例如：

......
<ListBox Grid.Row="1" x:Name="lst"
         ItemsSource="{Binding Design_Master_TileItems} >
 ......

如注释中所述，如果您发现该属性在运行时为空，则意味着问题不在您的绑定范围内。 您需要解决您的查询。 我绝不是EF的经验丰富，但这是我的建议：

查询Design_Master_Category表时，请尝试使用.Include(o => o.Design_Master_TileItems)函数。 [ 参考 ]