C# Ölçüt ifadesinde veri türü uyuşmazlığı. (Access)

 OleDbCommand com = new OleDbCommand("insert into STOCK_SALES(CAID,FICHENO,SALESDATE,BARCODE,SALESPRICE,PRICEVAT,UNIT,CDATE,CUSERID,STATUS) values(?,?,?,?,?,?,?,?,?,?)");
                com.CommandType = System.Data.CommandType.Text;

                com.Parameters.AddWithValue("CAID", DropDownList1.SelectedValue);
                com.Parameters.AddWithValue("FICHENO",txtFisNo.Text );
                com.Parameters.AddWithValue("SALESDATE", Convert.ToDateTime(txtTarih.Text));

                com.Parameters.AddWithValue("BARCODE",GridUrunSatis.Rows[i].Cells[0].Text);
                com.Parameters.AddWithValue("SALESPRICE",Convert.ToDecimal(GridUrunSatis.Rows[i].Cells[2].Text));

                com.Parameters.AddWithValue("PRICEVAT", Convert.ToInt32(GridUrunSatis.Rows[i].Cells[3].Text.Replace("%", "")));
                com.Parameters.AddWithValue("UNIT", Convert.ToInt32(GridUrunSatis.Rows[i].Cells[4].Text)); 

                com.Parameters.AddWithValue("CDATE", DateTime.Now);
                com.Parameters.AddWithValue("CUSERID", Session["Id"]);
                com.Parameters.AddWithValue("STATUS", 0);

                com.Connection = CmTrClass.baglanti;
                CmTrClass.baglanti.Open();
                com.ExecuteNonQuery();
                CmTrClass.baglanti.Close();