how to add 0 row in database Windows Application #

foreach (DataGridViewRow g1 in dataGridView.Rows)

{

SqlCommand cmd = new SqlCommand("insert into MainBillForm (Billno,Name,Date,Order_Number,Sno,Product_Name,Description,Qty,Unit_Price,Tax,Amount,Tax_Amount,Total_Amount) Values ('" + Billno + "','" + Nametxt.Text + "','" + dateTimePicker1.Value + "','" + ONtxt.Text + "','" + g1.Cells[0].FormattedValue.ToString() + "','" + g1.Cells[1].FormattedValue.ToString() + "','" + g1.Cells[2].FormattedValue.ToString() + "','" + g1.Cells[3].FormattedValue.ToString() + "','" + g1.Cells[4].FormattedValue.ToString() + "','" + g1.Cells[5].FormattedValue.ToString() + "','" + g1.Cells[6].FormattedValue.ToString() + "','" + TotalTaxtxt.Text + "','" + totalamounttxt.Text + "')", con);

con.Open();

cmd.ExecuteNonQuery();

//MessageBox.Show("Records Inserted SuccessFully");

this.Hide();

MainBillfrm sd = new MainBillfrm();

sd.Show();

con.Close();

}