BrightIdeasSoftware.ObjectListView.EnsureGroupVisible C# (CSharp) Method

        public virtual void EnsureGroupVisible(ListViewGroup lvg)
        {
            if (!this.ShowGroups || lvg == null)
                return;

            int groupIndex = this.Groups.IndexOf(lvg);
            if (groupIndex <= 0) {
                // There is no easy way to scroll back to the beginning of the list
                int delta = 0 - NativeMethods.GetScrollPosition(this, false);
                NativeMethods.Scroll(this, 0, delta);
            } else {
                // Find the display rectangle of the last item in the previous group
                ListViewGroup previousGroup = this.Groups[groupIndex - 1];
                ListViewItem lastItemInGroup = previousGroup.Items[previousGroup.Items.Count - 1];
                Rectangle r = this.GetItemRect(lastItemInGroup.Index);

                // Scroll so that the last item of the previous group is just out of sight,
                // which will make the desired group header visible.
                int delta = r.Y + r.Height / 2;
                NativeMethods.Scroll(this, 0, delta);
            }
        }