TreeView 递归选择父节点和子节点

privatevoid treeView1_AfterCheck(object sender, TreeViewEventArgs e)
{
if (e.Action != TreeViewAction.ByMouse)
return;
    SetParentNode(e.Node);
    SetChildNode(e.Node);
}
privatevoid SetParentNode(TreeNode node)
{
if (node.Level >0)
    {
        node.Parent.Checked =true;
        SetParentNode(node.Parent);
    }
}
privatevoid SetChildNode(TreeNode node)
{
foreach (TreeNode childNode in node.Nodes)
    {
        childNode.Checked = node.Checked;
if (node.Nodes.Count >0)
            SetChildNode(childNode);
    }
}