DateTime GetLastRequest(int MemberISN) { string query = "select cvsDate from[Conversation] where ConversationISN in (select val_number from MemberExt3 where AttributeISN = 564 and MemberISN = @MemberISN)"; var dataProvider = new DataProvider(); var parameters = new Hashtable(); parameters.Add("MemberISN", MemberISN); var tb = dataProvider.ExecuteQuery(query, parameters); if(tb.Rows.Count > 0) { return Convert.ToDateTime(tb.Rows[0][0]); } return new DateTime(); }