fang1004tw

        private void treeView1_AfterCheck(object sender, TreeViewEventArgs e)
        {
            foreach (TreeNode item in e.Node.Nodes)
            {
                item.Checked = e.Node.Checked;
                if (item.Nodes.Count > 0) treeView1_AfterCheck( null, new TreeViewEventArgs(item));               
            }
        }