您的表具有牙医名称，您是有约束力的使用牙医

Your table have Dentist name and you are binding with Dentists

无论如何，尝试这样做;

Anyway, try this;

<ItemsControl ItemsSource="{Binding Path=DataContext.Dentist,
 RelativeSource={RelativeSource AncestorType={x:Type Window}}}">

And;

<TextBlock Text="{Binding Dentist_Name}"/>