How do I get the start index and number of visible items in a ListView?

Question

I have a listview working in virtual mode, in the LargeIcons view. Retrieves are expensive, so I want to ask for the data for all the visible items. How do I get the start

Answer 1

Just off the top of my head, and I haven't tested this but could you do:

private void GetIndexes(ListView vv, out int startidx, out int count)
{
            ListViewItem lvi1 = vv.GetItemAt(vv.ClientRectangle.X+6, vv.ClientRectangle.Y + 6); 
            ListViewItem lvi2 = vv.GetItemAt(vv.ClientRectangle.X+6, vv.ClientRectangle.Bottom-10); 
            startidx = vv.Items.IndexOf(lvi1); 
            int endidx = vv.Items.IndexOf(lvi2);
            if (endidx == -1) endidx = vv.Items.Count;
            count = endidx - startidx;
}