如何重用HierarchicalDataTemplate? [英] How do I reuse a HierarchicalDataTemplate?

问题描述

我有两个相同的HierarchicalDataTemplates.唯一的区别是模板的数据类型.

I have two identical HierarchicalDataTemplates. The only difference is the DataType of the templates.

<HierarchicalDataTemplate DataType="{x:Type Data:OuterType}"
                          ItemsSource="{Binding Items}">
    <StackPanel>...</StackPanel>
</HierarchicalDataTemplate>

<HierarchicalDataTemplate DataType="{x:Type Data:InnerType}"
                          ItemsSource="{Binding Items}">
    <StackPanel>...</StackPanel>
</HierarchicalDataTemplate>

如何避免在两个数据模板中都复制堆栈面板的内容?

How can I avoid duplicating the contents of the stack panel in both data templates?

我考虑过将StackPanel变成一个用户控件，但这是控件唯一可以使用的地方.我希望StackPanel是某种资源，但我不知道如何使它工作.

I considered making the StackPanel into a user control, but this is the only place that control would ever be used. I would rather the StackPanel be some kind of resource, but I can't figure out how to make that work.

推荐答案

我会为应该看起来像这样的东西制作单独的模板:

I would go the route of making seperate templates for things that are supposed to look the same like this:

<DataTemplate x:Key="sharedTemplate">
    <StackPanel>...</StackPanel>
</DataTemplate>

<HierarchicalDataTemplate DataType="{x:Type InnerType}"
                            ItemsSource="{Binding Items}">
    <ContentControl Content="{Binding}"
                    ContentTemplate="{StaticResource sharedTemplate}" />
</HierarchicalDataTemplate>

<HierarchicalDataTemplate DataType="{x:Type OuterType}"
                            ItemsSource="{Binding Items}">
    <ContentControl Content="{Binding}"
                    ContentTemplate="{StaticResource sharedTemplate}" />
</HierarchicalDataTemplate>

那里有体系结构上更优雅的解决方案，但是看到外观是由设计师处理的，我不喜欢在这些方面使用过于复杂的编程范例的解决方案.

There are architecturally more elegant solutions out there, but seeing look and feel is handled by designers I don't like to use solutions that are too complex programming paradigm wise in these things.

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