如何綁定為ItemsControl的子級的ListBox的ItemsSource？

Question

假設我有一個“視圖/頁面”，如下所示：

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

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

用於創建上述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>

但是問題是我不知道ListBox的ItemsSource的綁定。 因此，我沒有得到如上所示的輸出。

這是我的數據庫表的樣子：

Answer 1

你可以簡單地綁定到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} >
 ......

如注釋中所述，如果您發現該屬性在運行時為空，則意味着問題不在您的綁定范圍內。 您需要解決您的查詢。 我絕不是EF的經驗豐富，但這是我的建議：

查詢Design_Master_Category表時，請嘗試使用.Include(o => o.Design_Master_TileItems)函數。 [ 參考 ]