External table is not in the expected format.

Question

csv File Upload In mysql database in wamp server

how this error Clear..
External table is not in the expected format.
//choose path
private void button1_Click(object sender, EventArgs e)
    {
        OpenFileDialog dlg = new OpenFileDialog();
        dlg.Filter = "Text files | *.csv";
        if (dlg.ShowDialog() == DialogResult.OK)
        {
            string fileName;
            fileName = dlg.FileName;
            txtFileName.Text = fileName;
        }
    }
//submit button
    private void button2_Click(object sender, EventArgs e)
    {
        if (txtFileName.Text != "")
        {
            string path = txtFileName.Text;
            string id = "";
            string pimage = "";
            string cate = "";
            string subcat = "";
            string pcode = "";
            string peng = "";
            string ptam = "";
            string barcode = "";
            string unit = "";
            string promrp = "";
            string procast = "";
            string pprice = "";
            string aqty = "";
            string alertqty = "";
            string pdetail = "";
            string tax = "";
            string mdate = "";
            string edate = "";

            OleDbConnection my_con = new OleDbConnection("Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + path + ";Extended Properties=Excel 12.0;");
            my_con.Open();
  External table is not in the expected format.//this line error throw
            OleDbCommand icmd = new OleDbCommand("SELECT * FROM [dataGridView1_Data$]", my_con);

            OleDbDataReader dr = icmd.ExecuteReader();
            while (dr.Read())
            {
                id = dr[0].ToString();
                pimage = dr[1].ToString();
                cate = dr[2].ToString();
                subcat = dr[3].ToString();
                pcode = dr[4].ToString();
                peng = dr[5].ToString();
                ptam = dr[6].ToString();
                barcode = dr[7].ToString();
                unit = dr[8].ToString();
                promrp = dr[9].ToString();
                procast = dr[10].ToString();
                pprice = dr[11].ToString();
                aqty = dr[12].ToString();
                alertqty = dr[13].ToString();
                pdetail = dr[14].ToString();
                tax = dr[15].ToString();
                mdate = dr[16].ToString();
                edate = dr[17].ToString();

                MySqlConnection con = new MySqlConnection("SERVER=localhost;" +
                    "DATABASE=shop_management;" +
                    "UID=root;" +
                    "PASSWORD=;");
                con.Open();

                MySqlCommand icmmd = new MySqlCommand("INSERT INTO add_product(id,product_image,category,sub_category,product_code,product_english, product_tamil,  barcode,unit,product_mrp,product_cost,product_price,available_quantity,alert_quantity,product_detail,tax,man_date,exp_date)VALUES(@a,@b,@c,@d,@e,@f,@g,@h,@i,@j,@k,@l,@m,@n,@o,@p,@q,@r)", con);
                icmmd.Parameters.AddWithValue("a", id);
                icmmd.Parameters.AddWithValue("b", pimage);
                icmmd.Parameters.AddWithValue("c", cate);
                icmmd.Parameters.AddWithValue("d", subcat);
                icmmd.Parameters.AddWithValue("e", pcode);
                icmmd.Parameters.AddWithValue("f", peng);
                icmmd.Parameters.AddWithValue("g", ptam);
                icmmd.Parameters.AddWithValue("h", barcode);
                icmmd.Parameters.AddWithValue("i", unit);
                icmmd.Parameters.AddWithValue("j", promrp);
                icmmd.Parameters.AddWithValue("k", procast);
                icmmd.Parameters.AddWithValue("l", pprice);
                icmmd.Parameters.AddWithValue("m", aqty);
                icmmd.Parameters.AddWithValue("n", alertqty);
                icmmd.Parameters.AddWithValue("o", pdetail);
                icmmd.Parameters.AddWithValue("p", tax);
                icmmd.Parameters.AddWithValue("q", mdate);
                icmmd.Parameters.AddWithValue("r", edate);
                icmmd.ExecuteNonQuery();
                con.Close();
            }
            MessageBox.Show("data Imported");
            txtFileName.Text = "";
        }
        else if (txtFileName.Text == "")
        {

        }

    }

}