private void dataLista_CellMouseDoubleClick_1(object sender, DataGridViewCellMouseEventArgs e)
        {
            if (dataLista.Rows.Count > 0)
            {
                DateTime date = Convert.ToDateTime(this.dataLista.CurrentRow.Cells["fecha"].Value);

                FrmDetalleVentas venta = new FrmDetalleVentas(Convert.ToString(this.dataLista.CurrentRow.Cells["codigo"].Value),
                                                              Convert.ToString(this.dataLista.CurrentRow.Cells["Razon_social"].Value),
                                                              date.ToShortDateString(),
                                                              Convert.ToString(this.dataLista.CurrentRow.Cells["tipo_comprobante"].Value),
                                                              Convert.ToString(this.dataLista.CurrentRow.Cells["estado"].Value),
                                                              Convert.ToString(Decimal.Round(Convert.ToDecimal(this.dataLista.CurrentRow.Cells["total"].Value), 2))
                                                              , Convert.ToString(this.dataLista.CurrentRow.Cells["idcliente"].Value), Convert.ToString(this.dataLista.CurrentRow.Cells["cuit"].Value));
                venta.ShowDialog();
            }
        }
        private void dataLista_KeyDown(object sender, KeyEventArgs e)
        {
            if (e.KeyCode == Keys.Up || e.KeyCode == Keys.Down)
            {
                DTDetalleventa.DataSource = NegocioVenta.MostrarDetalle(dataLista.CurrentRow.Cells["Codigo"].Value.ToString());
            }

            if (e.KeyCode == Keys.Enter)
            {
                if (dataLista.Rows.Count > 0)
                {
                    DateTime date = Convert.ToDateTime(this.dataLista.CurrentRow.Cells["fecha"].Value);

                    FrmDetalleVentas venta = new FrmDetalleVentas(Convert.ToString(this.dataLista.CurrentRow.Cells["codigo"].Value),
                                                                  Convert.ToString(this.dataLista.CurrentRow.Cells["razon_social"].Value),
                                                                  date.ToShortDateString(),
                                                                  Convert.ToString(this.dataLista.CurrentRow.Cells["tipo_comprobante"].Value),
                                                                  Convert.ToString(this.dataLista.CurrentRow.Cells["estado"].Value),
                                                                  Convert.ToString(Decimal.Round(Convert.ToDecimal(this.dataLista.CurrentRow.Cells["total"].Value), 2))
                                                                  , Convert.ToString(this.dataLista.CurrentRow.Cells["idcliente"].Value), Convert.ToString(this.dataLista.CurrentRow.Cells["cuit"].Value));
                    venta.ShowDialog();
                }
            }
        }