public ActionResult EditAssign(decimal id = 0)
        {
            var         project_ins = db.TPR_PROJECT_INSTITUTE.Single(t => t.PROJECT_INS_NO == id);
            TPR_PROJECT project     = db.TPR_PROJECT.Include("SET_CLASS").Single(p => p.PROJECT_NO == project_ins.PROJECT_NO);

            USER_INFO_VIEWMODEL zonal_info =
                (from u in db.SEC_USERS
                 join d in db.SET_DESIGNATION on u.DESIG_NO equals d.DESIG_NO
                 join t in db.SET_THANA on u.THANA_NO equals t.THANA_NO
                 join z in db.SET_ZILLA on t.ZILLA_NO equals z.ZILLA_NO
                 join div in db.SET_DIVISION on z.DIVISION_NO equals div.DIVISION_NO
                 where u.USER_NO == project_ins.USER_NO
                 select new USER_INFO_VIEWMODEL
            {
                userno = u.USER_NO,
                fullname = u.USER_FULL_NAME,
                username = u.USER_NAME,
                hrid = u.HR_EMP_ID,
                mobile = u.USER_MOBILE,
                designation = d.DESIG_NAME,
                thana = t.THANA_NAME,
                zilla = z.ZILLA_NAME,
                division = div.DIVISION_NAME
            }).FirstOrDefault();

            INSTITUTE_INFO_VIEWMODEL institute_info =
                (from i in db.SET_INSTITUTE
                 join t in db.SET_THANA on i.THANA_NO equals t.THANA_NO
                 join z in db.SET_ZILLA on t.ZILLA_NO equals z.ZILLA_NO
                 join d in db.SET_DIVISION on z.DIVISION_NO equals d.DIVISION_NO
                 where i.INSTITUTE_NO == project_ins.INSTITUTE_NO
                 select new INSTITUTE_INFO_VIEWMODEL
            {
                insname = i.INSTITUTE_NAME,
                inscode = i.INSTITUTE_NO,
                thana = t.THANA_NAME,
                zilla = z.ZILLA_NAME,
                division = d.DIVISION_NAME
            }).FirstOrDefault();

            ViewBag.Subjects          = db.SET_CLASS_SUBJECT_ASSIGN_GET(id, project.CLASS_NO).ToList();
            ViewBag.PROJECT           = Session["TPR_PROJECT"] = project;
            ViewBag.ZONAL_INFO        = Session["TPR_ZONAL_INFO"] = zonal_info;
            ViewBag.INSTITUTE_INFO    = Session["TPR_INS_INFO"] = institute_info;
            ViewBag.PROJECT_INSTITITE = Session["TPR_PROJECT_INS"] = project_ins;

            return(View());
        }