private void lbcLoaiHang_SelectedIndexChanged(object sender, EventArgs e)
{
if (lbcLoaiHang.SelectedValue != null)
{
if (lbcLoaiHang.SelectedValue.ToString() == "0")
{
grcHanghoaSearch.DataSource = HangHoaService.LoadDataTable();
}
else
{
int maLoaiHang = int.Parse(lbcLoaiHang.SelectedValue.ToString());
grcHanghoaSearch.DataSource = HangHoaService.GetByLoaiHang(maLoaiHang);
}
}
else
{
}
}