怎么样得到treeview的全部所选节点呢？

Question

treeview开启了多选框，怎么得到所有所选节点上文字呢？

Answer 1

递归遍历...或者你也可以 AfterCheck 事件中把数据加入一个集合...

Answer 2

private void button1_Click(object sender, EventArgs e)
        {
                        //CallRecursive(treeView1);
        }
        private void PrintRecursive(TreeNode treeNode)
        {
            // Print the node.
            System.Diagnostics.Debug.WriteLine(treeNode.Text);
            MessageBox.Show(treeNode.Text);
            // Print each node recursively.
            foreach (TreeNode tn in treeNode.Nodes)
            {
                if (tn.Checked==true) 
                PrintRecursive(tn);
            }
        }        // Call the procedure using the TreeView.
        private void CallRecursive(TreeView treeView)
        {
            // Print each node recursively.
            TreeNodeCollection nodes = treeView.Nodes;
            foreach (TreeNode n in nodes)
            {
                PrintRecursive(n);
            }
        }

Answer 3

dinglj1760(阿拉丁) 的方法好像有BUG，不能正确显示选中的节点！

Answer 4

private void PrintRecursive(TreeNode treeNode)
{
            // Print the node.
            System.Diagnostics.Debug.WriteLine(treeNode.Text);
            MessageBox.Show(treeNode.Text);
            // Print each node recursively.
            foreach (TreeNode tn in treeNode.Nodes)
            {
                if (tn.Checked==true) 
                {
                    ary.add(tn.Tag);//加到集合中
                }if(tn.Nodes.Count > 0)
{
                PrintRecursive(tn);
}
            }
        }

Answer 5

看我这个！
ArrayList list =new ArrayList();
private void getNode()
{
    foreach(TreeNode node in TreeView1.Nodes)
    {
        if(node.checked)
        {
            list.Add(node);
        }
        GetCheckNode(node);
    }
}private void GetCheckNode(TreeNode node)
{
    foreach(TreeNode n in node.Nodes)
    {
        if(n.checked)
        {
              list.Add(n)
        }
        GetCheckNode(n);
     }
}在Button事件里调用
getNode();list集合里的就是所有被checked的节点

Answer 6

maxianjin(pony) 的方法运行时显示【错误 当前上下文中不存在名称“ary”】

Answer 7

xcq_summer(秋子) ，你的也有问题！

Answer 8

dinglj1760(阿拉丁) 的方法不能正确显示第三级节点。下面是我修改后的代码，注释部分是原来代码 private void PrintRecursive(TreeNode treeNode)
        {
            // Print the node.
            //System.Diagnostics.Debug.WriteLine(treeNode.Text);
            
            if (treeNode.Checked == true)
            {
                MessageBox.Show(treeNode.Name+"-"+treeNode.Text);               
            }
            // Print each node recursively.
            foreach (TreeNode tn in treeNode.Nodes)
            {
                //if (tn.Checked == true)
                //{
                    //MessageBox.Show(treeNode.Text);
                    PrintRecursive(tn);
                //}            }
            
        }        // Call the procedure using the TreeView.
        private void CallRecursive(TreeView treeView)
        {
            // Print each node recursively.
            TreeNodeCollection nodes = treeView.Nodes;
            //MessageBox.Show(nodes.Count.ToString());
            foreach (TreeNode n in nodes)
            {
                PrintRecursive(n);
            }
        }