WPF/Metro-style: Making ListView show only complete items

Question

In my Metro application, I have a data source containing a certain number of items (say 25). I have a ListView that presents those items. My problem is that the ListView hav

Answer 1

The answer from @JesuX is the better approach -- if done correctly. The following ListView subclass works fine for me:

public sealed class IntegralItemsListView : ListView
{
    protected override Size MeasureOverride(Size availableSize)
    {
        Size size = base.MeasureOverride(availableSize);
        double height = 0;
        if (Items != null)
        {
            for (int i = 0; i < Items.Count; ++i)
            {
                UIElement itemContainer = (UIElement)ContainerFromIndex(i);
                if (itemContainer == null)
                {
                    break;
                }

                itemContainer.Measure(availableSize);
                double childHeight = itemContainer.DesiredSize.Height;
                if (height + childHeight > size.Height)
                {
                    break;
                }

                height += childHeight;
            }
        }

        size.Height = height;
        return size;
    }
}

One caveat -- if you plop an IntegralItemsListView into a Grid, it will have

VerticalAlignment="Stretch"

by default, which defeats the purpose of this class.

Also: If the items are of uniform height, the method can obviously be simplified:

protected override Size MeasureOverride(Size availableSize)
{
    Size size = base.MeasureOverride(availableSize);
    size.Height = (int)(size.Height / ItemHeight) * ItemHeight;
    return size;
}