XAML-Map-Control/MapControl/Avalonia/MapItem.Avalonia.cs

using Avalonia.Controls;
using Avalonia.Input;

namespace MapControl;

public partial class MapItem
{
    protected override void OnPointerPressed(PointerPressedEventArgs e)
    {
        if (e.Pointer.Type != PointerType.Mouse &&
            ItemsControl.ItemsControlFromItemContainer(this) is MapItemsControl mapItemsControl)
        {
            mapItemsControl.UpdateSelectionFromEvent(this, e);
        }

        e.Handled = true;
    }

    protected override void OnPointerReleased(PointerReleasedEventArgs e)
    {
        if (e.Pointer.Type == PointerType.Mouse &&
            e.InitialPressMouseButton == MouseButton.Left &&
            ItemsControl.ItemsControlFromItemContainer(this) is MapItemsControl mapItemsControl)
        {
            mapItemsControl.UpdateSelectionFromEvent(this, e);
        }

        e.Handled = true;
    }
}