CardMaker.Forms.MDIProject.UpdateSelectedNodeLayoutColor C# (CSharp) Метод

        private void UpdateSelectedNodeLayoutColor()
        {
            if (null != treeView.SelectedNode && 1 == treeView.SelectedNode.Level) // only do this on layout level nodes
            {
                if (null != m_tnCurrentLayout)
                {
                    m_tnCurrentLayout.BackColor = Color.White; // restore the previous
                }
                m_tnCurrentLayout = treeView.SelectedNode;
                m_tnCurrentLayout.BackColor = Color.LightBlue;
            }
        }