TreeView从下往上遍历的递归调用问题

Question

本帖最后由 yangjinan0729 于 2010-09-18 16:32:43 编辑

Answer 1

try
private void treeView1_AfterCheck(object sender, TreeViewEventArgs e)
{
    //只捕获checkbox操作事件
    if (e.Action != TreeViewAction.Unknown)
    {
        bool all_selected = true;
        foreach (TreeNode node in e.Node.Parent.Nodes)
        {
            if (!node.Checked)
            {
                all_selected = false;
                break;   
            }
        }
        TreeNode p = e.Node.Parent;
        while (p!= null)
        {
            p.Checked = all_selected;
            p = p.Parent;
        }
    }
}

Answer 2

哎 这样就可以了  今天下午脑子有问题了
 //处理TreeView1的checkbox事件
        private void treeView1_AfterCheck(object sender, TreeViewEventArgs e)
        {
            //只捕获checkbox操作事件
            if (e.Action != TreeViewAction.Unknown)
            {
                tree(e.Node);
            }
        }
        private void tree(TreeNode tn)
        {
            if (tn.Parent != null)
            {
                //节点未选中，则设置祖先节点为false
                if (tn.Checked == false)
                {
                    tn.Parent.Checked = false;
                    if (tn.Parent.Parent != null)
                    { 
                        //tn.Parent.Parent.Checked = false; 
                        tree(tn.Parent);
                    }
                }
                else if (tn.Checked)
                {
                    if (tn.Nodes.Count > 0)
                    {
                        this.CheckAllChildNodes(tn, tn.Checked);
                    }
                }
                //指示是否全部选中了节点的子节点，如果子节点全部选中之后则自动选中此父节点
                bool ischecked = true;
                foreach (TreeNode ctn in tn.Parent.Nodes)
                {
                    ischecked = ischecked & ctn.Checked;
                }
                if (ischecked)
                {
                    tn.Parent.Checked = true;
                    if (tn.Parent.Parent != null)
                    {
                        tree(tn.Parent);
                    }
                    //tree(e.Node.Parent);
                }
            }
        }        private void CheckAllChildNodes(TreeNode treeNode, bool nodeChecked)
        {
            foreach (TreeNode node in treeNode.Nodes)
            {
                node.Checked = nodeChecked;
                if (node.Nodes.Count > 0)
                {
                    // If the current node has child nodes, call the CheckAllChildsNodes method recursively.
                    this.CheckAllChildNodes(node, nodeChecked);
                }
            }
        }