How to add row in datagridview from access database on per button click

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C#3.0

C#

I have a access database from where I am populating the datagridview on button click event. but what I exactly I want to add record of access database in datagridview when button is clicked. Means on 1st click 1 record should be add in datagridview, on 2nd click another record should be add and so on...

What modification I need to make in my code, please guide me

private void button1_Click(object sender, EventArgs e)
        {
            aCommand3 = new OleDbCommand("select * from batch_tbl", main_connection);
            aAdapter3 = new OleDbDataAdapter(aCommand3);

            ds3 = new DataSet();
            aAdapter3.Fill(ds3, "app_info");


            ds3.Tables[0].Constraints.Add("pk_bno", ds3.Tables[0].Columns[0], true);
            int batch_count = ds3.Tables[0].Rows.Count;

            dataGridView1.AutoGenerateColumns = true;
            dataGridView1.DataSource = ds3.Tables[0];
        }