private void Search()
{
string Lsp = (comboBox1.SelectedItem == null || comboBox1.SelectedItem.ToString().Equals("All"))?"":comboBox1.SelectedItem.ToString();
string Ncc = (comboBox2.SelectedItem == null || comboBox2.SelectedItem.ToString().Equals("All")) ? "" : comboBox2.SelectedItem.ToString();
List <Models.SanPham> lst = lstSanpham.Search(textBox1.Text, Lsp, Ncc);
if (lst.Count > 0)
{
GridView_Sanpham.DataSource = lst;
}
else
{
MessageBox.Show("Danh sách trống");
}
}
