TreeView如何获得该展开节点的索引或者是相关的值

Question

代码如下
 private void treeView1_AfterExpand(object sender, TreeViewEventArgs e)
        {
            if (treeView1？？？)
            {
                button1.Visible = true;
                button2.Visible = true;
                button3.Visible = true;
                button4.Visible = true;
                
                label2.Visible = true;
                label3.Visible = true;
                label4.Visible = true;
                label5.Visible = true;                this.pictureBox1.Image = global::WindowsApplication1.Properties.Resources.studentiformation;
                this.pictureBox1.Location = new System.Drawing.Point(214, 172);
                this.pictureBox1.Name = "pictureBox1";
                this.pictureBox1.Size = new System.Drawing.Size(136, 138);
                this.pictureBox1.TabIndex = 1;
                this.pictureBox1.TabStop = false;
}
假如我要做展开后加载这些图片呀 还有设置可见性啊  但是我不知道if里面怎么获得展开节点的索引
请高手指点

Answer 1

node.text,和node.index不就是他的文本和索引么？

Answer 2

foreach(TreeNode node in treeView2.Nodes)
{
if (node.IsExpanded)
{
Console.WriteLine(node.Text);
}
}