仮想化

Data Virtualization enables hassle-free loading of large amount of data. It enables the ListView to download only the required screen-display information instead of the whole data.

virtualization in Listview

C1ListView supports virtualization of data to fetch the list of items as the user scrolls in real time. This data virtualization technique is supported in ListView through C1DataCollection which provides C1VirtualDataCollection class for data virtualized collection views.

XAML
C#

Tab Caption

public MainWindow()
{
    InitializeComponent();
    // データソースに連結します。
    this.Loaded += VirtualMode_Loaded;
}
// データ仮想化には LoadAsync メソッドを使用します。
private async void VirtualMode_Loaded(object sender, RoutedEventArgs e)
{
    var persons = new VirtualModeDataCollection();
    listView.ItemsSource = persons;
    await persons.LoadAsync(0, 0);
}