public void LoadMaNhanVien()
{
DataTable tbNhanVien = doan.GetMaNV();
cbbMaNV.DataSource = tbNhanVien;
cbbMaNV.DisplayMember = "MaNV";
cbbMaNV.ValueMember = "MaNV";
}
public void loadMaNV()
{
DataTable maNV = doan.GetMaNV();
cbbMaNV.DataSource = maNV;
cbbMaNV.DisplayMember = "MaNV";
cbbMaNV.ValueMember = "MaNV";
}