rish2017

let mainQueue = NSOperationQueue.mainQueue()
NSNotificationCenter.defaultCenter().addObserverForName(UIApplicationUserDidTakeScreenshotNotification,
    object: nil,
    queue: mainQueue) { notification in
        // executes after screenshot
}

rish2017

XAML# : ItemRealized property of long list selector keeps a track of the items loaded in the UI disposable view of the Xaml Page

<phone:LongListSelector HorizontalAlignment="Stretch" x:Name="listSearchResult" Background="White" VerticalAlignment="Top"  ScrollViewer.VerticalScrollBarVisibility="Disabled"SelectionChanged="lst_SearchResult_SelectionChanged" Visibility="Visible" Grid.ColumnSpan="2" Padding="0 0 0 0" ManipulationStarted="lst_SearchResult_ManipulationStarted" ItemRealized="lst_SearchResult_ItemRealized"  >

C#:

 private void lst_SearchResult_ItemRealized(object sender, ItemRealizationEventArgs e)
        {
            SearchViewModel searchItem = new SearchViewModel();
            searchItem = e.Container.Content as SearchViewModel;