private void HandleQueryItemVisibility(object sender, QueryItemVisibilityEventArgs e)
{
if (_loadedRows.Count > 0)
{
e.SetVisibleRange(_loadedRows.Min(), _loadedRows.Max());
}
}
private void HandleQueryItemVisibility(object sender, QueryItemVisibilityEventArgs e)
{
var wrapPanel = AssociatedObject.GetItemsHost() as VirtualizingWrapPanel;
if (wrapPanel != null)
{
var range = wrapPanel.GetVisibleItemsRange();
e.SetVisibleRange(range.FirstRealizedItemIndex, range.LastRealizedItemIndex);
}
}