private void LoadDV()
{
QLDichVuBUS _DichVu = new QLDichVuBUS();
dtgvDV.DataSource = _DichVu.GetData();
ButtonControl(1);
}
public void LoadDVToComboBox()
{
QLDichVuBUS _Services = new QLDichVuBUS();
cmbTenDV.DataSource = _Services.GetData();
cmbTenDV.DisplayMember = "MaDV";
cmbTenDV.ValueMember = "GiaDV";
}