比如

<Window x:Name="window">
  <ItemsControl Items="{Binding BookItems}">
     <ItemsControl.ItemTemplate>
         <DataTemplate>
           <Button Style="{DynamicResource CleanButtonStyle}" Padding="5,0" Click="LoadFavorite" Content="{Binding Title}">
             <
 
Button.ContextMenu>
               <ContextMenu>
                 <MenuItem Header="刪除" Command={Binding DataContext.DeleteCommand,Element=window}" />
               </ContextMenu>
             </Button.ContextMenu>
           </Button>
         </DataTemplate>
     </
 
ItemsControl.ItemTemplate>
  </ItemsControl>
</Window>

比如這裡的Command就是無效的。