Tugas Buka Tambah Hapus Access

berikut adalah source code buka tambah access

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 SulthanAndromeda_1506760990_bktmbhexcelaccs

{

    public partial class Form1 : Form

    {

        public Form1()

        {

            InitializeComponent();

        }

        private void button1_Click(object sender, EventArgs e)

        {

            System.Data.OleDb.OleDbConnection MyConnection;

            System.Data.DataSet DtSet;

            System.Data.OleDb.OleDbDataAdapter MyCommand;

            openFileDialog1.ShowDialog();

            MyConnection = new System.Data.OleDb.OleDbConnection(@"provider=Microsoft.Jet.OLEDB.4.0;Data Source='"

             + openFileDialog1.FileName.ToString() + "';Extended Properties=Excel 8.0;");

            MyCommand = new System.Data.OleDb.OleDbDataAdapter("select * from [Sheet1$]", MyConnection);

            MyCommand.TableMappings.Add("Table", "Net-informations.com");

            DtSet = new System.Data.DataSet();

            MyCommand.Fill(DtSet);

            dataGridView1.DataSource = DtSet.Tables[0];

            MyConnection.Close();

        }

        private void button2_Click(object sender, EventArgs e)

        {

            dataGridView1.ColumnCount = 2;

            dataGridView1.Columns[0].Name = "Nama";

            dataGridView1.Columns[1].Name = "Alamat";

            //int baris = System.Convert.ToInt32(textBox1.Text);

            string nama = System.Convert.ToString(textBox2.Text);

            string alamat = System.Convert.ToString(textBox3.Text);

            string[] row = new string[] { nama, alamat };

            dataGridView1.Rows.Add(row);

        }

        private void Form1_Load(object sender, EventArgs e)

        {

        }

    }

}