private void BtRowEditPro_Click(object sender, EventArgs e)
{
var pro = HelperProduct.GetProductModel(proID);
if (pro != null)
{
gbEditPro.Enabled = true;
tbProName1.Clear(); cbCategory.SelectedIndex = 0;
tbPrePrice1.Clear(); tbSalePrice1.Clear(); tbStock1.Clear();
}
}