HI
try this
using System;
using System.Windows.Forms;
namespace WindowsFormsApplication23
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
//
// This is the first node in the view.
//
TreeNode treeNode = new TreeNode("Windows");
treeView1.Nodes.Add(treeNode);
//
// Another node following the first node.
//
treeNode = new TreeNode("Linux");
treeView1.Nodes.Add(treeNode);
//
// Create two child nodes and put them in an array.
// ... Add the third node, and specify these as its children.
//
TreeNode node2 = new TreeNode("C#");
TreeNode node3 = new TreeNode("VB.NET");
TreeNode[] array = new TreeNode[] { node2, node3 };
//
// Final node.
//
treeNode = new TreeNode("Dot Net Perls", array);
treeView1.Nodes.Add(treeNode);
}
}
}
refer the link
http://www.dotnetperls.com/treeview