Question

见下文所有DataTemplates都有相同的前两个TextBlock 在fieldStringTemplate和fieldDateTemplate中，我想引用fieldTemplate，所以我不再重复这两个。
如何从DataTemplate引用DataTemplate？

真正的应用程序有更多模板和更多常见元素在实际应用中，这些是实现Field的类 FieldTemplateSelector基于类。

<Window.Resources>
    <local:FieldTemplateSelector x:Key="fieldTemplateSelector"/>
    <DataTemplate x:Key="fieldTemplate">
        <StackPanel>
            <TextBlock Text="{Binding Path=Name}" />
            <TextBlock Text="{Binding Path=DisplayValue}" />
        </StackPanel>
    </DataTemplate>
    <DataTemplate x:Key="fieldStringTemplate">
        <StackPanel>
            <TextBlock Text="{Binding Path=Name}" />
            <TextBlock Text="{Binding Path=DisplayValue}" />
            <TextBox Text="{Binding Path=FieldValue}" />
        </StackPanel>
    </DataTemplate>
    <DataTemplate x:Key="fieldDateTemplate">
        <StackPanel>
            <TextBlock Text="{Binding Path=Name}" />
            <TextBlock Text="{Binding Path=DisplayValue}" />
            <DatePicker SelectedDate="{Binding Path=FieldValue}" />
        </StackPanel>
    </DataTemplate>
</Window.Resources>
<Grid>
    <ListBox ItemsSource="{Binding Path=Fields}"
             ItemTemplateSelector="{StaticResource fieldTemplateSelector}"
             HorizontalContentAlignment="Stretch">
    </ListBox>
</Grid>

Answer 1

在我看来，做这样的事情要好得多：

<DataTemplate x:Key="fieldStringTemplate">
   <TextBox Text="{Binding Path=FieldValue}" />
</DataTemplate>

<DataTemplate x:Key="fieldDateTemplate">
    <DatePicker SelectedDate="{Binding Path=FieldValue}" />
</DataTemplate>

<!-- and so on... -->

<DataTemplate x:Key="common">
   <StackPanel>
       <TextBlock Text="{Binding Path=Name}" />
       <TextBlock Text="{Binding Path=DisplayValue}" />
       <ContentPresenter Content="{Binding}" 
                         ContentTemplateSelector="{StaticResource fieldTemplateSelector}"/>
   </StackPanel>
</DataTemplate>

<ListBox ItemsSource="{Binding Path=Fields}"
         ItemTemplate="{StaticResource common}"
         HorizontalContentAlignment="Stretch">
</ListBox>

DataTemplate包含另一个DataTemplate

1 个答案: