list view row selection values

HI yadagiri uppari

Try this one......

using System;
using System.Data;
using System.Windows.Forms;
using System.Data.SqlClient;
namespace WindowsFormsApplication12
{
    public partial class Form1 : Form
    {
        SqlDataAdapter da;
        DataTable dt;
        public Form1()
        {
            InitializeComponent();
        }
       
        private void button1_Click(object sender, EventArgs e)
        {
            listView1.Items.Clear();
            da = new SqlDataAdapter("select * from emp", "Data Source=MCNDESKTOP07;Initial Catalog=manish;User ID=sa;Password=***********");
            dt = new DataTable();
            da.Fill(dt);
            foreach (DataRow dr in dt.Rows)
            {
                ListViewItem itm = new ListViewItem(dr["empId"].ToString());
                itm.SubItems.Add(dr["empName"].ToString());
                listView1.Items.Add(itm);
            }
        }

        private void button2_Click(object sender, EventArgs e)
        {

            //for displaying in to textbox
            if (listView1.SelectedItems.Count > 0)
            {
             richTextBox1.Text = listView1.SelectedItems[0].SubItems[0].Text +"     "+ listView1.SelectedItems[0].SubItems[1].Text;
         
            }
        }

    }
}