TreeView

New a TreeView  tV1

        private void tV1_AfterSelect(object sender, TreeViewEventArgs e)
        {
           TreeNode tvNode=new TreeNode();
            tvNode=tV1.SelectedNode;      
            button1.Text = tvNode.Text;                     
        }

 

        private void btnRoot_Click(object sender, EventArgs e)
        {         
            foreach (string item in listBox1.Items)           
            {

                   tV1.Nodes.Add(item);

             }
            this.tV1.SelectedNode = this.tV1.Nodes[this.tV1.Nodes.Count - 1];
            tV1.LabelEdit = true;
            if (!this.tV1.SelectedNode.IsEditing)
            {
                this.tV1.SelectedNode.BeginEdit();
            } 
        }

        private void btnChild_Click(object sender, EventArgs e)
        {
            TreeNode tvNode = new TreeNode();
            tvNode = tV1.SelectedNode;

            foreach (string item in listBox1.Items)
            {

                tvNode.Nodes.Add(item);

            }
         }