A first chance exception of type 'MySql.Data.MySqlClient.MySqlException' occurred in MySql.Data.dll

Hi. I have this code: cId = fila(cmbCodigo.SelectedIndex).ToString cMedida = fila(cmbMedida.SelectedIndex).ToString cDenomina = fila(cmbDenominacion.SelectedIndex).ToString oComando.CommandText = INSERT INTO preciodeno(id, medida, denomina ) _ VALUES(?cId, ?cMedida, ?cDenomina)

[ excel to mysql ]

Hi! How i do for transfer data from excel file to mysql? Some example? Thanks