interview

home / developersection / interviews / what is basic concept for tree view

Ask Question

What is basic concept for tree view

Mark Devid 1146 16-Sep-2016
c# c# 
Updated on 22-Sep-2020
Mark Devid

Other

Message
Can you answer this question?
Answer

1 Answers

Mark Devid

Mark Devid

16-Sep-2016

TreeNode is the keyword which is used to represent the node for the Treeview. 

We need to define the name for the TreeNode 

eg ;- TreeNode Node1 

How to add 1st element in the node : 

syntax  tNode = treeView1.Nodes.Add("Country"); 

treeView1 is the name of the Tree view which is present in your form


What is basic concept for tree view


Now, we can add many node to this  node. 

eg. treeView1.Nodes[0].Nodes.Add("India"); 

        we can add many node to 2nd node       

eg treeView1.Nodes[0].Nodes[0].Nodes.Add("Delhi"); 

Here is the complete code we can implement in our coding

 
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
 
namespace WindowsFormsApplication18
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
 
        private void Form1_Load(object sender, EventArgs e)
        {
            TreeNode node1,tNode;
 
            tNode = treeView1.Nodes.Add("Country");
 
            treeView1.Nodes[0].Nodes.Add("India");
            treeView1.Nodes[0].Nodes[0].Nodes.Add("Delhi");
 
            treeView1.Nodes[0].Nodes.Add("Australia");
            treeView1.Nodes[0].Nodes[1].Nodes.Add("Canberra");
            treeView1.Nodes[0].Nodes[1].Nodes.Add("Perth");
 
            treeView1.Nodes[0].Nodes.Add("NewZealand");
            treeView1.Nodes[0].Nodes[2].Nodes.Add("Auckland");
            treeView1.Nodes[0].Nodes[2].Nodes[0].Nodes.Add("North_land");
        }
        private void button1_Click(object sender, EventArgs e)
        {
            MessageBox.Show(treeView1.SelectedNode.FullPath.ToString());
        }
    }
}

 What is basic concept for tree view

MindStick Training
MindStick Training

Liked By

We use cookies to ensure you have the best browsing experience on our website. By using our site, you acknowledge that you have read and understood our Cookie Policy & Privacy Policy