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我正在使用Panorama控件構建WP7應用程序。我對WP7相當陌生,所以我可能會錯過簡單的東西。我的Panorama控件綁定到ViewModel,PanoramaItems在運行時添加,當ViewModel的屬性通過Web服務請求填充數據時。我想在每個PanoramaItem的頂部有一個部分,它包含一個刷新按鈕等。如何在WP7中的ScrollViewer/ListBox中默認滾動位置
我可以使用樣式將項目添加到列表框的頂部,但我希望將該項目從頂部滾動直到用戶將其拉下。有沒有方法可以在樣式或模板中設置默認滾動位置?我讀過一些使用listBox.ScrollToItem的數據滾動到某個特定項目的示例,但這在我的測試應用程序中不起作用,或者在ScrollViewer上使用ScrollToVerticalOffset。
<phone:PhoneApplicationPage.Resources>
<Style x:Key="StoryStyle" TargetType="ListBox">
<Setter Property="Background" Value="Transparent"/>
<Setter Property="Foreground" Value="{StaticResource PhoneForegroundBrush}"/>
<Setter Property="ScrollViewer.HorizontalScrollBarVisibility" Value="Disabled"/>
<Setter Property="ScrollViewer.VerticalScrollBarVisibility" Value="Auto"/>
<Setter Property="BorderThickness" Value="0"/>
<Setter Property="BorderBrush" Value="Transparent"/>
<Setter Property="Padding" Value="0"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="ListBox">
<ScrollViewer x:Name="ScrollViewer" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" Foreground="{TemplateBinding Foreground}" Padding="{TemplateBinding Padding}">
<StackPanel>
<Button Content="Refresh"></Button>
<ItemsPresenter/>
</StackPanel>
</ScrollViewer>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</phone:PhoneApplicationPage.Resources>
<Grid x:Name="LayoutRoot" Background="Transparent">
<controls:Panorama ItemsSource="{Binding Programs}" x:Name="AllPrograms">
<controls:Panorama.Title>
<TextBlock></TextBlock>
</controls:Panorama.Title>
<controls:Panorama.HeaderTemplate>
<DataTemplate>
<TextBlock Text="{Binding Title}" />
</DataTemplate>
</controls:Panorama.HeaderTemplate>
<controls:Panorama.ItemTemplate>
<DataTemplate>
<ListBox Margin="0,0,-12,0" ItemsSource="{Binding Stories}" Style="{StaticResource StoryStyle}">
<ListBox.ItemTemplate>
<DataTemplate>
<StackPanel Margin="0,0,0,17" Width="432" Height="80">
<TextBlock Text="{Binding SensibleTitle}" TextWrapping="Wrap" />
<TextBlock><Run Text="{Binding Duration, StringFormat='hh\\:mm\\:ss'}"></Run><Run Text=", "/><Run Text="{Binding DisplayDate, StringFormat='MMMM dd, yyyy'}"/></TextBlock>
</StackPanel>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
</DataTemplate>
</controls:Panorama.ItemTemplate>
</controls:Panorama>
</Grid>