<Grid Grid.Row="1" Name="advertGrid">
<ListBox Name="advertListBox">
<ListBox.ItemTemplate>
<DataTemplate>
<Grid>
<Image Name="imgAdvertisement" Source="{Binding AdPic}" Stretch="Fill" Height="112" ></Image>
</Grid>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
</Grid>
Windows?phone
------解决方案--------------------

把这个加到listbox里面,把宽度设宽点看看效果
<ItemsControl.ItemsPanel>
<ItemsPanelTemplate>
<VirtualizingStackPanel Orientation="Horizontal" />