WPF-超出项目集合的DataTemplate代码的可重用性

Question

I am using Bing maps in my WPF project, and I want to use common style overall project View with map. It is not important that it's about Bing maps, problem here is in reusability of code defined in DataTemplate also for single object of ViewModel.

In the folowing code, there is DataTemplate for images placed on map. It has some properties bind on ViewModel item from collection.

<DataTemplate x:Key="HeadingArrowsDataTemplate">
    <Image Source="/Intens.C2XTestPlatform.Frontend;component/Images/Maps/Arrow.png"
           m:MapLayer.Position="{Binding PointLocation}"
           RenderTransformOrigin="0.5,1"
           Width="100"
           Height="100"
           Visibility="{Binding Path=PointLocation, Converter={StaticResource IsNotNullVisibilityConverter}}">
        <Image.RenderTransform>
            <TransformGroup>
                <RotateTransform Angle="{Binding Heading}" />
                <TranslateTransform X="-50"
                                    Y="-100" />
            </TransformGroup>
        </Image.RenderTransform>
    </Image>
</DataTemplate>

I use it in the first View for ViewModels collection ( RelevanceLinesVM ):

    <m:Map CredentialsProvider="{Binding MapCredentialsProvider}"
           Mode="Road"
           x:Name="ucMap">
        <m:MapItemsControl ItemsSource="{Binding RelevanceLinesVM}"
                           helpers:MapFixBehavior.FixUpdate="True"
                           ItemTemplate="{StaticResource HeadingArrowsDataTemplate}"
    </m:Map>

In other View, I have only single ViewModel object ( RelevanceLineVM ), and I have to copy-paste code from DataTemplate for the same appearance and binding.

   <m:Map Name="ucMap"
           Mode="Road"
           CredentialsProvider="{Binding MapCredentialsProvider}">
        <Image DataContext="{Binding RelevanceLineVM}"
               Source="/Intens.C2XTestPlatform.Frontend;component/Images/Maps/Arrow.png"
               RenderTransformOrigin="0.5,1"
               Width="100"
               Height="100"
               m:MapLayer.Position="{Binding PointLocation}"
               Visibility="{Binding Path=PointLocation, Converter={StaticResource IsNotNullVisibilityConverter}}">
            <Image.RenderTransform>
                <TransformGroup>
                    <RotateTransform Angle="{Binding Heading}" />
                    <TranslateTransform X="-50"
                                        Y="-100" />
                </TransformGroup>
            </Image.RenderTransform>
        </Image>
    </m:Map>

How can I create common template for usage for both single ViewModel and collection of ViewModels?

Edit

ASh's answer works, but unfortunately only for these properties in DataTemplate, which are inherited from ContentControl class. Other are not bound properly.

Answer 1

add ContentControl and reuse HeadingArrowsDataTemplate for its ContentTemplate

<m:Map Name="ucMap"
       Mode="Road"
       CredentialsProvider="{Binding MapCredentialsProvider}">
    <ContentControl Content="{Binding RelevanceLineVM}"
                    ContentTemplate="{StaticResource HeadingArrowsDataTemplate}"/>
</m:Map>