C# (CSharp) BTL HeThongBanHang.NhapFile примеры использования

Пример #1

 private void DangNhap_FormClosed(object sender, FormClosedEventArgs e)
 {
     HeThongBanHang.NhapFile();
 }

Пример #2

 private void button2_Click(object sender, EventArgs e)
 {
     HeThongBanHang.NhapFile();
     Application.Exit();
 }