ช่วยหน่อยครับ VS C# ผมยังใช้ไม่ค่อยเป็น ต้องทำงานส่งอาจารย์

namespace Project
{
    public partial class Form5 : Form
    {
        public Form5()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            string path = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=C:/Users/tonton/Documents/Visual Studio 2010/Projects/Project/Database1.accdb";
            OleDbConnection Con = new OleDbConnection(path);
            Con.Open();

            string find = "SELECT * FROM personnel WHERE perID Like '" + "%" + textBox1.Text + "%";
            OleDbDataAdapter D = new OleDbDataAdapter(find, Con);
            DataTable T = new DataTable();
            D.Fill(T);
            dataGridView1.DataSource = T;
        }

        private void dataGridView1_CellContentClick(object sender, DataGridViewCellEventArgs e)
        {
            
                if (e.RowIndex < 0)
                { return; }
                textBox1.Text = dataGridView1.Rows[e.RowIndex].Cells[0].Value.ToString();
                textBox2.Text = dataGridView1.Rows[e.RowIndex].Cells[1].Value.ToString();
                textBox3.Text = dataGridView1.Rows[e.RowIndex].Cells[3].Value.ToString();
                textBox4.Text = dataGridView1.Rows[e.RowIndex].Cells[2].Value.ToString();
                textBox5.Text = dataGridView1.Rows[e.RowIndex].Cells[4].Value.ToString();
                textBox6.Text = dataGridView1.Rows[e.RowIndex].Cells[5].Value.ToString();
                textBox7.Text = dataGridView1.Rows[e.RowIndex].Cells[6].Value.ToString();
                textBox8.Text = dataGridView1.Rows[e.RowIndex].Cells[7].Value.ToString();
            
        }
      
     

        private void Form5_Load(object sender, EventArgs e)
        {
            string path = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=C:/Users/tonton/Documents/Visual Studio 2010/Projects/Project/Database1.accdb";
            OleDbConnection Con = new OleDbConnection(path);
            Con.Open();
            
            string sql = "SELECT * FROM personnel";
            
            OleDbDataAdapter D = new OleDbDataAdapter(sql, Con);
            DataTable T = new DataTable(); 
            D.Fill(T);
            dataGridView1.DataSource = T;
            Con.Close();
        }
    }
}