public bool DeleteTeacher(string _teacherID)
{
AccountDA accountDA = new AccountDA();
bool isExist = false;
bool success = accountDA.AccountExist(_teacherID, ref isExist);
if (isExist)
{
success = accountDA.DeleteAccount(_teacherID);
}
if (success)
{
success = teacherDA.DeleteTeacher(_teacherID);
}
return(success);
}
