ขอโค้ด Update และ Delete หน่อยครับ ผมทำเว็บ Application โดยใช้ภาษา C# เขียน ต้องการทำหน้า Update

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 WindowsFormsApplication1
{
    public partial class MainForm : Form
    {
        public MainForm()
        {
            InitializeComponent();

            DataGridView1.AutoSizeColumnsMode = DataGridViewAutoSizeColumnsMode.AllCells;
            DataGridView1.AllowUserToAddRows = false;
            DataGridView1.AllowUserToResizeColumns = false;
            DataGridView1.AllowUserToResizeRows = false;
            DataGridView1.AutoGenerateColumns = false;
        }

        private void MainForm_Load(object sender, EventArgs e)
        {
            DataGridView1.DataSource = //Bind Data ของคุณที่นี่

            DataGridViewTextBoxColumn IdColumn = new DataGridViewTextBoxColumn();
            IdColumn.Name = "ID";
            IdColumn.HeaderText = "ID";
            IdColumn.HeaderCell.Style.Alignment = DataGridViewContentAlignment.MiddleCenter;
            IdColumn.DataPropertyName = "MonthID";
            IdColumn.ReadOnly = true;

            DataGridViewTextBoxColumn MonthColumn = new DataGridViewTextBoxColumn();
            MonthColumn.Name = "Month";
            MonthColumn.HeaderText = "Month";
            MonthColumn.HeaderCell.Style.Alignment = DataGridViewContentAlignment.MiddleCenter;
            MonthColumn.DataPropertyName = "MonthName";

            DataGridViewButtonColumn UpdateButtonColumn = new DataGridViewButtonColumn();
            UpdateButtonColumn.Name = "Update";
            UpdateButtonColumn.HeaderText = "Update";
            UpdateButtonColumn.HeaderCell.Style.Alignment = DataGridViewContentAlignment.MiddleCenter;
            UpdateButtonColumn.Text = "Update";
            UpdateButtonColumn.UseColumnTextForButtonValue = true;

            DataGridViewButtonColumn DeleteButtonColumn = new DataGridViewButtonColumn();
            DeleteButtonColumn.Name = "Delete";
            DeleteButtonColumn.HeaderText = "Delete";
            DeleteButtonColumn.HeaderCell.Style.Alignment = DataGridViewContentAlignment.MiddleCenter;
            DeleteButtonColumn.Text = "Delete";
            DeleteButtonColumn.UseColumnTextForButtonValue = true;

            DataGridView1.Columns.Add(IdColumn);
            DataGridView1.Columns.Add(MonthColumn);
            DataGridView1.Columns.Add(UpdateButtonColumn);
            DataGridView1.Columns.Add(DeleteButtonColumn);

            DataGridView1.CellClick += new DataGridViewCellEventHandler(DataGridView1_CellClick);
        }

        void DataGridView1_CellClick(object sender, DataGridViewCellEventArgs e)
        {
            switch (e.ColumnIndex)
            { 
                case 2:
                    MessageBox.Show("Update " + DataGridView1.Rows[e.RowIndex].Cells["ID"].Value.ToString(), "Msg Box");
                    //ใช้ Sql Command เพื่อ Update Data ที่นี่
                    break;
                case 3:
                    MessageBox.Show("Delete " + DataGridView1.Rows[e.RowIndex].Cells["ID"].Value.ToString(), "Msg Box");
                    //ใช้ Sql Command เพื่อ Delete Data ที่นี่
                    break;
            }

            DataGridView1.DataSource = //Bind Data ของคุณอีกทีที่นี่
        }
    }
}