绑定 CollectionViewSource 时，DesignTime 数据未显示在 Blend 中 [英] DesignTime data not showing in Blend when bound against CollectionViewSource

问题描述

我有一个视图模型的数据模板，其中一个 itemscontrol 绑定到一个 CollectionViewSource(以在 xaml 中启用排序).

I have a datatemplate for a viewmodel where an itemscontrol is bound against a CollectionViewSource (to enable sorting in xaml).

<DataTemplate x:Key="equipmentDataTemplate">
    <Viewbox>
        <Viewbox.Resources>
            <CollectionViewSource x:Key="viewSource" Source="{Binding Modules}">
                <CollectionViewSource.SortDescriptions>
                    <scm:SortDescription PropertyName="ID" Direction="Ascending"/>
                </CollectionViewSource.SortDescriptions>
            </CollectionViewSource>
        </Viewbox.Resources>
        <ItemsControl ItemsSource="{Binding Source={StaticResource viewSource}}" 
                      Height="{DynamicResource equipmentHeight}" 
                      ItemTemplate="{StaticResource moduleDataTemplate}">
            <ItemsControl.ItemsPanel>
                <ItemsPanelTemplate>
                    <StackPanel Orientation="Horizontal" />
                </ItemsPanelTemplate>
            </ItemsControl.ItemsPanel>
        </ItemsControl>
    </Viewbox>
</DataTemplate>

我还设置了 UserControl，其中所有这些都被定义为提供设计时数据

I have also setup the UserControl where all of this is defined to provide designtime data

d:DataContext="{x:Static vm:DesignTimeHelper.Equipment}">

这基本上是一个静态属性，它为我提供了一个 EquipmentViewModel，其中包含一个 ModuleViewModels (Equipment.Modules) 列表.现在只要我绑定到 CollectionViewSource 设计时数据就不会显示在混合 3 中.当我直接绑定到 ViewModel 集合时

This is basically a static property that gives me an EquipmentViewModel that has a list of ModuleViewModels (Equipment.Modules). Now as long as I bind to the CollectionViewSource the designtime data does not show up in blend 3. When I bind to the ViewModel collection directly

<ItemsControl ItemsSource="{Binding Modules}"

我可以看到设计时数据.知道我能做什么吗?

I can see the designtime data. Any idea what I could do?

推荐答案

这样做过(至少现在是这样):)

Been there done that (now at least) :)

这是我找到的解决方案.诀窍是覆盖 CollectionViewSource 设计时的源.我使用 d:DesignSource 属性来使用另一个静态资源设计时间:

This is the solution I've found. The trick is to override the source for the CollectionViewSource designtime. I use the d:DesignSource property to use another static resource designtime:

<Window.Resources>
    <CollectionViewSource x:Key="ViewSource"
            Source="{Binding ModelProperty}"
            d:DesignSource="{{x:Static MyProg:DesignTimeData.MyList}">
        <!-- Contents -->
    </CollectionViewSource>
</Window.Resources>
    
<!-- No change to the using class -->
<ListBox ItemsSource="{Binding Source={StaticResource ViewSource}}">
        
</ListBox>

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