treeview子节点关联父节点

[aligu528]

在winform下 treeview 控件，是复选框，
子节点选中了，相应的父节点要怎么选中？

子节点关联父节点

求解，求源码？

[dongxiao0517]

private void treeView1_AfterCheck(object sender, TreeViewEventArgs e)
{
if (updateTreeNode) return; // 如果在刷新中
updateTreeNode = true;
try
{
TreeNodeCheck(e.Node, e.Node.Checked);
}
finally
{
updateTreeNode = false;
}
}
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
}
}
}
这一个挺好用的

[bdmh]

递归parent

[MKing0412]

子节点只要有一个选中对应的父节点就选中不？
父节点选中，所有的子节点有变化没？
相应的父节点这样选中：

        private void treeView1_AfterCheck(object sender, TreeViewEventArgs e)
        {
            TreeNode tNode = e.Node.Parent;
            if (tNode!=null)
            {
                tNode.Checked = true;
            }
        }

像楼上大神说的一样，用递归逐层处理。

[jacikafx]

private void treeView1_AfterCheck(object sender, TreeViewEventArgs e)
{
CheckControl(e);

}
public void CheckControl(TreeViewEventArgs e)
{
if (e.Action != TreeViewAction.Unknown)
{
if (e.Node != null && !Convert.IsDBNull(e.Node))
{
CheckParentNode(e.Node);
if (e.Node.Nodes.Count > 0)
{
CheckAllChildNodes(e.Node, e.Node.Checked);
}
}

}
}
private void CheckAllChildNodes(TreeNode treeNode, bool p)
{
foreach (TreeNode tn in treeNode.Nodes)
{
tn.Checked = p;
if (tn.Nodes.Count > 0)
{
CheckAllChildNodes(tn, p);
}
}
}

private void CheckParentNode(TreeNode treeNode)
{
bool bChecked = false;
if (treeNode.Parent != null)
{
foreach (TreeNode node in treeNode.Parent.Nodes)
{
if (node.Checked)
{
bChecked = true;
break;
}
}
if (bChecked)
{
treeNode.Parent.Checked = true;
CheckParentNode(treeNode.Parent);
}
else
{
treeNode.Parent.Checked = false;
CheckParentNode(treeNode.Parent);
}
}
}