public async Task <IActionResult> Edit(int?id, [Bind("UsersBelongToCampaignid,CampaignId,UserId,Role")] UsersBelongToCampaign usersBelongToCampaign)
        {
            if (id != usersBelongToCampaign.UsersBelongToCampaignid)
            {
                return(NotFound());
            }

            if (ModelState.IsValid)
            {
                try
                {
                    _context.Update(usersBelongToCampaign);
                    await _context.SaveChangesAsync();
                }
                catch (DbUpdateConcurrencyException)
                {
                    if (!UsersBelongToCampaignExists(usersBelongToCampaign.UsersBelongToCampaignid))
                    {
                        return(NotFound());
                    }
                    else
                    {
                        throw;
                    }
                }
                return(RedirectToAction(nameof(Index)));
            }
            ViewData["CampaignId"] = new SelectList(_context.Campaign, "CampaignId", "CampaignId", usersBelongToCampaign.CampaignId);
            ViewData["UserId"]     = new SelectList(_context.Users, "UsersId", "UsersId", usersBelongToCampaign.UserId);
            return(View(usersBelongToCampaign));
        }
        public async Task <IActionResult> Create([Bind("UsersBelongToCampaignid,CampaignId,UserId,Role")] UsersBelongToCampaign usersBelongToCampaign)
        {
            if (ModelState.IsValid)
            {
                _context.Add(usersBelongToCampaign);
                await _context.SaveChangesAsync();

                return(RedirectToAction(nameof(Index)));
            }
            ViewData["CampaignId"] = new SelectList(_context.Campaign, "CampaignId", "CampaignId", usersBelongToCampaign.CampaignId);
            ViewData["UserId"]     = new SelectList(_context.Users, "UsersId", "UsersId", usersBelongToCampaign.UserId);
            return(View(usersBelongToCampaign));
        }