Question

如何实现单击treeview 子节点到点父节点key或TEXT

对treeview控件不熟悉，想实现单击treeview 子节点，能在text控件中到点其父节点key或TEXT。求高人给代码

Answer 1

aspx页：

<asp:TreeView ID="TreeView1" runat="server" ShowLines="True" OnSelectedNodeChanged="TreeView1_SelectedNodeChanged">
<Nodes>
<asp:TreeNode Text="M2" Value="M2">
<asp:TreeNode Text="m21" Value="m21">
<asp:TreeNode Text="m22" Value="m22"></asp:TreeNode>
</asp:TreeNode>
</asp:TreeNode>
</Nodes>
</asp:TreeView>

aspx.cs页

protected void TreeView1_SelectedNodeChanged(object sender, EventArgs e)
{
TreeNode tn = new TreeNode();
if (TreeView1.SelectedNode.Parent != null)
{
tn = TreeView1.SelectedNode.Parent;//得到父节点
Response.Write(tn.Value);//输出你的父节点Value值
}
else
{
Response.Write("没有父节点了！！");
}
}

Answer 2

TreeView1_SelectedNodeChanged 这个事件中 当然你最好try catch或者判断一下是否有父节点
txt.Text = tree.SelectedNode.Parent.Text;
//在winfrom中好像没有下面的这个
tree.SelectedNode.Parent.Value;

Answer 3

听不懂。“能在text空间中到点其父节点”什么意思

Answer 4

private void treeView1_AfterSelect(object sender, TreeViewEventArgs e)
{
try
{
textBox1.Text = e.Node.Parent.Text;
}
catch
{
Response.Write("你选中的是根节点");
}
}