public string delete(childDelete use) { string response = ""; SqlConnection con = new SqlConnection(data); SqlCommand cmd = new SqlCommand("DELETE FROM CourseChild WHERE childId = @childId", con); cmd.Parameters.AddWithValue("@childId", use.childId); con.Open(); try { cmd.ExecuteNonQuery(); response = "Success"; deleteOptions(use.childId, use.user); } catch (Exception ex) { response = ex.ToString(); con.Close(); return(response); } con.Close(); try { parameterDeleteAll del = new parameterDeleteAll(); del.childId = use.childId; del.creator = use.user; IparameterClient para = new IparameterClient(); response = para.deleteAll(del); } catch (Exception ex) { response = ex.ToString(); } return(response); }