create a node in c sharp

TreeNode treeNode = new TreeNode("Windows");

            treeView1.Nodes.Add(treeNode);

            treeView1.ForeColor = Color.Brown;

            treeNode = new TreeNode("Linux");

            treeView1.Nodes.Add(treeNode);

            TreeNode node2 = new TreeNode("C#");

            TreeNode node3 = new TreeNode("VB.NET");

            TreeNode[] array = new TreeNode[] { node2, node3 };

            treeNode = new TreeNode("Dot Net Perls", array);

                        treeView1.Nodes.Add(treeNode);