大侠们，求Treeview里checkbox父节点被选中，子节点全部被选中。

[liulangze]

如题。请大侠们指导指导。

[surlew]

        private void tree_AfterCheck(object sender, System.Windows.Forms.TreeViewEventArgs e)
        {
            if (e.Node.Checked)
            {
                foreach (TreeNode tn in e.Node.Nodes)
                {
                    tn.Checked = true;
                }

            }
            else
            {
                foreach (TreeNode tn in e.Node.Nodes)
                {
                    tn.Checked = false;
                }
            }
        }

[liulangze]

大侠，我先试试。

[h_w_king]

private void treeView1_AfterCheck(object sender, TreeViewEventArgs e)
{
if (e.Action == TreeViewAction.Unknown)
return;

if (e.Node.Checked)
CheckAllNodes(e.Node.Nodes);

}

private void CheckAllNodes(TreeNodeCollection nodes)
{
foreach (TreeNode n in nodes)
{
n.Checked = true;
if (n.Nodes.Count > 0)
CheckAllNodes(n.Nodes);
}
}

[yanglinqiang]

 private void treeView1_AfterCheck_1(object sender, TreeViewEventArgs e)
        {
              for (int i = 0; i < e.Node.Nodes.Count; i++)
                e.Node.Nodes[i] = e.Node.Checked;                     
        }

[buzhidao945]

#region "树的选中状态"
private void EnableCheck(bool bol)
{
foreach (TreeNode td in tree_GongNeng.Nodes)
{
td.Checked = bol;
CheckAllChildNodes(td, td.Checked);
}
}
#endregion

#region 选中子节点
public void CheckAllChildNodes(TreeNode treeNode, bool nodeChecked)
{
foreach (TreeNode node in treeNode.Nodes)
{
node.Checked = nodeChecked;
if (node.Nodes.Count > 0)
{
this.CheckAllChildNodes(node, nodeChecked);
}
}
}
#endregion


private void tree_GongNeng_AfterCheck(object sender, TreeViewEventArgs e)
{
if (e.Node.Nodes.Count > 0)
{
CheckAllChildNodes(e.Node, e.Node.Checked);
}
}

private void grv_QuanXianLieBiao_Click(object sender, EventArgs e)
{
EnableCheck(false);
}