public void OnMessage(object sender, MessageEventArgs e) { if (e.Message.Text == null) { return; } if (e.Message.Text.ToLower().Contains("/addadmin")) { Admin checkAdm = database.FindAdmin(e.Message.From.Id, e.Message.Chat.Id); if (checkAdm == null) { database.AddAdmin(new Admin { UserId = e.Message.From.Id, GroupId = e.Message.Chat.Id }); botClient.SendTextMessageAsync(new ChatId(e.Message.Chat.Id), "Added as admin of this chat"); } else { botClient.SendTextMessageAsync(new ChatId(e.Message.Chat.Id), "You are already an admin of this chat"); } } }