private void txtCodigoprod_KeyDown(object sender, KeyEventArgs e)
{
if (txtCodigoprod.Text == "")
{
}
else
{
if (e.KeyCode == Keys.Enter)
{
grdDatos.DataSource = null;
grdDatos.Rows.Add(txtCodigoprod.Text);
grdDatos.DataSource = Producto.BuscarporPK(Int32.Parse(txtCodigoprod.Text));
txtCodigoprod.Clear();
foreach (DataGridViewRow row in grdDatos.Rows)
{
sumatoria += Convert.ToInt32(row.Cells["total"].Value);
}
tota = sumatoria;
iva = tota * 0.16;
res = tota + iva;
txtSubto.Text = Convert.ToString(tota);
txtIva.Text = Convert.ToString(iva);
txtTotal.Text = Convert.ToString(res);
}
}
}
