public ActionResult ApprovalDocument(int iInboxItemID, string strMessenger, string strRemark)
        {
            AuthConfig.SetMailConfig();
            ADInboxItemsInfo InboxItem = (ADInboxItemsInfo) new ADInboxItemsController().GetObjectByID(iInboxItemID);

            InboxItem.ADInboxItemMessage = strMessenger;
            InboxItem.ADInboxItemRemark  = strRemark;
            ADUsersInfo CurrentUserInfo = (ADUsersInfo) new ADUsersController().GetObjectByName(Convert.ToString(AuthConfig.GetSession("CurrentUser")));

            MailUtil.ApproveDocument(InboxItem, CurrentUserInfo);

            return(null);
        }