Avalonia实现滑动加载

Avalonia版本 V0.10.18

  private void ScrollViewer_OnScrollChanged(object? sender, ScrollChangedEventArgs e)
    {
        var vm = (MainWindowViewModel)DataContext;
        var t = (ScrollViewer)sender;
        
        // Console.WriteLine($"偏移量：{t.Offset.Length}");
        // Console.WriteLine($"可滚动内容范围：{t.Extent.Height}");
        // Console.WriteLine($"窗体高度：{t.DesiredSize.Height}");
        // Console.WriteLine($"计算后的高度：{t.Extent.Height - (t.DesiredSize.Height *2)}");
        
        if (t.Offset.Length >= t.Extent.Height - (t.DesiredSize.Height *2))
        {
            vm.Load();
        }
    }