public int AddChiMucTrinhDo(string levelName)
{
dtb_level x = new dtb_level();
x.name = levelName;
db.dtb_levels.InsertOnSubmit(x);
db.SubmitChanges();
return(x.id);
}
public void DeleteChiMucTrinhDo(int id)
{
dtb_level f = db.dtb_levels.Where(s => s.id == id).Single();
if (f == null)
{
return;
}
db.dtb_levels.DeleteOnSubmit(f);
db.SubmitChanges();
}
