您不能在DataTemplate的内部 中使用DataTemplateSelector.除了设置ListView的 ItemTemplate 之外，您还可以设置其 ItemTemplateSelector 属性，***通过StaticResource表达式设置:

You can't use a DataTemplateSelector inside a DataTemplate. Instead of setting the ListView's ItemTemplate you would set its ItemTemplateSelector property, preferrably by a StaticResource expression:

<Page.Resources>
    <local:ExploreTemplateSelector x:Key="ExploreTemplateSelector">
        ...
    </<local:ExploreTemplateSelector>
</Page.Resources>
...
<ListView ... ItemTemplateSelector="{StaticResource ExploreTemplateSelector}">
    ...
</ListView>