Flipview MVVM绑定选中项或选中索引
本文关键字:索引 MVVM Flipview 绑定 | 更新日期: 2023-09-27 18:13:57
我无法让flipview转到已在listview中选中的项目,它总是转到列表中的第一个元素。
这是我的flipview xaml和我的页面加载代码:XAML:
<interactivity:Interaction.Behaviors>
<core:EventTriggerBehavior EventName="Loaded">
<core:InvokeCommandAction Command="{Binding PageLoaded}" />
</core:EventTriggerBehavior>
</interactivity:Interaction.Behaviors>
<FlipView
x:Name="FlipViewItem"
ItemsSource="{Binding ArticlesLoader.ArticleItems}"
VirtualizingStackPanel.VirtualizationMode="Recycling"
SelectedItem="{Binding SelectedItem,Mode=TwoWay}"
ItemTemplateSelector="{StaticResource MyDataTemplateSelector}"
>
<FlipView.ItemsPanel>
<ItemsPanelTemplate>
<VirtualizingStackPanel Orientation="Horizontal" VirtualizationMode="Recycling" />
</ItemsPanelTemplate>
</FlipView.ItemsPanel>
</FlipView>
加载的事件页调用方法:c#:
private async Task LoadEverything()
{
if (ArticlesLoader!=null)
{
Index = ArticlesLoader.SelectedIndex;
if (ArticlesLoader.ArticleItems.Any()
&& ArticlesLoader.ArticleItems.Count > Index )
{
SelectedItem = ArticlesLoader.ArticleItems[Index];
RaisePropertyChanged(() => SelectedItem);
}
RaisePropertyChanged(() => Index);
}
}
我做错了什么?我试着用我的索引属性设置selectedIndex,但这也不工作。
编辑1:RaisePropertyChanged, OnPropertyChanged是同一件事=)我使用GalaSoft。MvvmLight
尝试将调用分派给RaisePropertyChanged
Window.Current.CoreWindow.Dispatcher.RunAsync(Windows.UI.Core.CoreDispatcherPriority.Normal, () =>
{
RaisePropertyChanged(() => Index);
});