C#TreeView上下級Checked屬性關聯處理

private void TreeNodeChild(TreeNode ATreeNode, bool AChecked) // 同步子节点

{

    if (ATreeNode == null) return;

    ATreeNode.Checked = AChecked;

    foreach (TreeNode vTreeNode in ATreeNode.Nodes)

        TreeNodeChild(vTreeNode, AChecked);

}

 

private void TreeNodeCheck(TreeNode ATreeNode, bool AChecked)

{

    if (ATreeNode == null) return;

    ATreeNode.Checked = AChecked;

    if (AChecked) // 如果选中本节点这就是选中全部上级节点

    {

        TreeNodeCheck(ATreeNode.Parent, AChecked);

    }

    else

    {

        if (ATreeNode.Parent != null && ATreeNode.Parent.Checked)

        {

            foreach(TreeNode vTreeNode in ATreeNode.Parent.Nodes)

                if (vTreeNode.Checked) return;

            TreeNodeCheck(ATreeNode.Parent, AChecked); // 判断是否所有的兄弟节点Checked都为false

        }

    }

}

 

private bool updateTreeNode= false;

private void treeView1_AfterCheck(object sender, TreeViewEventArgs e)

{

    if (updateTreeNode) return; // 如果在刷新中

    updateTreeNode = true;

    try

    {

        TreeNodeChild(e.Node, e.Node.Checked); // 同步子节点

        TreeNodeCheck(e.Node, e.Node.Checked);

    }

    finally

    {

        updateTreeNode = false;

    }

}