private string[] user_definition() { string[] tempS = null; if (people is Client) { Client temp = (Client)people; tempS = temp.For_table(); } if (people is Seller) { Seller temp = (Seller)people; tempS = temp.For_table(); } if (people is Moderator) { Moderator temp = (Moderator)people; tempS = temp.For_table(); } if (people is Administrator) { Administrator temp = (Administrator)people; tempS = temp.For_table(); } return(tempS); }