public List <TapHuanLuyen> GetAllTHlByValueOfKeyDicision(ThuocTinh ttkey)
{
return(dsthl.FindAll(x =>
{
return x.FindPropertysByPropertyKey(ttkey) != null;
}));
}
public ThuocTinh FindPropertysByPropertyKey(ThuocTinh ttkey)
{
return(dstt.Find(x => x == ttkey));
}
public bool IsExistProperty(ThuocTinh tt)
{
return(dstt.Find(x => x == tt) != null);
}