public static void DeleteItem(string data, int process) { switch (process) { case 1: break; case 2: break; case 3: var inbox = JsonConvert.DeserializeObject <List <Inbox> >(data); string inboxQ = ""; string inboxC = ""; InboxManager im = new InboxManager(); for (int i = 0; i < inbox.Count; i++) { inboxQ = im.concatDeleteInbox(inboxQ, inbox[i].id); for (int c = 0; c < inbox[i].InboxContent.Count; c++) { inboxC = im.concatDeleteInboxContent(inboxC, inbox[i].InboxContent[c].id); } } im.ExecuteNonQuery(inboxQ); im.ExecuteNonQuery(inboxC); break; default: break; } }