C

TreeView Kullanımı

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
 
namespace treenode_ex
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
 
        private void button1_Click(object sender, EventArgs e)
        {
            //Yeni Kategori Ekle
            TreeNode secilen;
            secilen = treeView1.SelectedNode;
            if (radioButton1.Checked)
            {
                treeView1.Nodes.Add(textBox1.Text);
            }
            else if (radioButton2.Checked)
            {
                secilen.Nodes.Add(textBox1.Text);
            }
 
        }
 
        private void button2_Click(object sender, EventArgs e)
        {
            //İşaretli Kategorileri Sil
            TreeNode secilen;
            secilen = treeView1.SelectedNode;
            if (!(secilen.Parent == null))
            {
                secilen.Parent.Nodes.Remove(secilen);
 
            }
            else
            {
                treeView1.Nodes.Remove(secilen);
            }
        }
 
        private void button3_Click(object sender, EventArgs e)
        {
            //Hepsini göster
            treeView1.ExpandAll();
        }
 
        private void button4_Click(object sender, EventArgs e)
        {
            //Kategori göster
            TreeNode secilen;
            secilen = treeView1.SelectedNode;
            MessageBox.Show(secilen.Text);
        }
 
       
    }
}