private void Form1_Load(object sender, EventArgs e)
{
KhoaDieuKien();
HienThi("");
cbMaDV.DataSource = bus.LayThongTinDV("");
cbMaDV.DisplayMember = "MaDV";
cbMaDV.ValueMember = "TenDV";
if (_Phanquyen.Phanquyen == 0)
{
btnLuu.Enabled = false;
btnSua.Enabled = false;
btnThem.Enabled = false;
btnXoa.Enabled = false;
//MessageBox.Show("nhanvien");
}
}