DataBase Updation With DataGridView in simple steps

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 gridViewTest
{
    public partial class testGrid : Form
    {
        public testGrid()
        {
            InitializeComponent();
        }

        private void testGrid_Load(object sender, EventArgs e)
        {
            // TODO: This line of code loads data into the 'gridTestDataSet.Emp' table. You can move, or remove it, as needed.
            this.empTableAdapter.Fill(this.gridTestDataSet.Emp);

        }

        private void button3_Click(object sender, EventArgs e)
        {
            //Update button update dataset after insertion,upadtion or deletion
            DialogResult dr = MessageBox.Show("Are you sure to save Changes","Message",MessageBoxButtons.YesNoCancel,MessageBoxIcon.Information);
            if (dr == DialogResult.Yes)
            {
                this.empTableAdapter.Update(gridTestDataSet.Emp);
                dataGridView1.Refresh();
                MessageBox.Show("Record Updated");
            }
        }
       

       
    }
}