private void btnSubmit_Click(object sender, EventArgs e)
{
if (list.Count == 0)
{
lbWarning.Text = "Empty Part";
}
else
{
XuLy.addPurchaseOrder(1, int.Parse(cbbSuppliers.SelectedValue.ToString()), int.Parse(cbbWarehouse.SelectedValue.ToString()), dtpDate.Value, list);
form f = new form();
f.Show();
Program.list = XuLy.getInventoryManagementView();
Program.f.viewInventoryTable(Program.list);
lbWarning.Text = "";
this.Close();
}
}