This._selectedNames.CollectionChanged += this.SelectedNamesCollectionChanged This._selectedNames.CollectionChanged -= this.SelectedNamesCollectionChanged Public ObservableCollection SelectedNames Private ObservableCollection _selectedNames
Public class ViewModel : NotifyPropert圜hangedBase For the purpose of the example RadListView is bound to a collection of strings:
#XAMARIN FORMS TAP AND HOLD HOW TO#
The example below shows how to utilize RadListView selection feature - how you can set multiple selection, apply selected item style and retrieve the selected items in a ViewModel class.įirst, create a ViewModel class with two collections - one for the ItemsSource of the ListView and one that will hold the SelectedItems. For detailed information on the approach go to Items Styles topic in ListView documentation. You can customize the way selected items look by applying SelectedItemStyle property to the RadListView instance. For more details check Notif圜ollectionChangedEventArgs Class topic. A Notif圜ollectionChangedEventArgs object which provides information on the collection changed event.The sender argument which is of type object, but can be cast to the RadListView type.The SelectionChanged event handler receives two parameters:
SelectionChanged: An event that is triggered whenever the SelectedItems collection is changed.SelectedItem ( object): Specifies the last selected item of the ListView.SelectedItems ( ObservableCollection): Read-only collection used to get the currently selected items.Selection and taps The ListView selection mode is controlled by setting the ListView. RadListView exposes the following properties for getting the selected item or items in case of multiple selection: Selection and taps Context actions Pull to refresh Detect scrolling Related links Download the sample The Xamarin.Forms ListView class supports user interaction with the data it presents. ListView.SelectionGesture = .SelectionGesture.Hold
0 kommentar(er)
