public JsonResult UserRoleEdit(SelectUserRolesViewModel model)
 {
     //if (ModelState.IsValid)
     {
         var idManager = new IdentityManager();
         var Db = new commenergyContext();
         var user = Db.Users.First(u => u.UserName == model.UserName);
         idManager.ClearUserRoles(user.Id);
         foreach (var role in model.Roles)
         {
             if (role.Selected)
             {
                 idManager.AddUserToRole(user.Id, role.RoleName);
                 Db.Entry(user).State = System.Data.Entity.EntityState.Modified;
                 Db.SaveChangesAsync();
             }
             return Json(model, JsonRequestBehavior.AllowGet);
         }
     }
     return Json(model, JsonRequestBehavior.AllowGet);
 }
 public JsonResult UserRoles(string UserName)
 {
     var Db = new commenergyContext();
     var user = Db.Users.First(u => u.UserName == UserName);
     var model = new SelectUserRolesViewModel(user);
     return Json(model, JsonRequestBehavior.AllowGet);
 }