public IEnumerable <string> getListTheLoaistring()
{
IEnumerable <TheLoai> listTheLoai = BaiDangSUM.getTheLoai();
List <string> listTheLoaistring = new List <string>();
foreach (TheLoai tg in listTheLoai)
{
listTheLoaistring.Add(tg.tenloaisach);
}
return(listTheLoaistring.AsEnumerable());
}
public IEnumerable <TheLoai> getListTheLoai()
{
IEnumerable <TheLoai> listTG = BaiDangSUM.getTheLoai();
return(listTG);
}