ZForge.Controls.TreeViewAdv.Tree.TreeViewAdv.GetNodeBounds C# (CSharp) Method

        private Rectangle GetNodeBounds(IEnumerable<NodeControlInfo> nodeControls)
        {
            Rectangle res = Rectangle.Empty;
            foreach (NodeControlInfo info in nodeControls)
            {
                if (res == Rectangle.Empty)
                    res = info.Bounds;
                else
                    res = Rectangle.Union(res, info.Bounds);
            }
            return res;
        }