public async Task <IActionResult> Edit(int id, [Bind("Id,Season,Year,StartDate,TerminationReason,OxygenUsed,PeakId,TrekkingAgencyId")] Expedition expedition)
        {
            if (id != expedition.Id)
            {
                return(NotFound());
            }

            if (ModelState.IsValid)
            {
                try
                {
                    _context.Update(expedition);
                    await _context.SaveChangesAsync();
                }
                catch (DbUpdateConcurrencyException)
                {
                    if (!ExpeditionExists(expedition.Id))
                    {
                        return(NotFound());
                    }
                    else
                    {
                        throw;
                    }
                }
                return(RedirectToAction(nameof(Index)));
            }
            ViewData["PeakId"]           = new SelectList(_context.Peaks, "Id", "Name", expedition.PeakId);
            ViewData["TrekkingAgencyId"] = new SelectList(_context.TrekkingAgencies, "Id", "Id", expedition.TrekkingAgencyId);
            return(View(expedition));
        }
        public async Task <IActionResult> Edit(int id, [Bind("Id,Name")] TrekkingAgency trekkingAgency)
        {
            if (id != trekkingAgency.Id)
            {
                return(NotFound());
            }

            if (ModelState.IsValid)
            {
                try
                {
                    _context.Update(trekkingAgency);
                    await _context.SaveChangesAsync();
                }
                catch (DbUpdateConcurrencyException)
                {
                    if (!TrekkingAgencyExists(trekkingAgency.Id))
                    {
                        return(NotFound());
                    }
                    else
                    {
                        throw;
                    }
                }
                return(RedirectToAction(nameof(Index)));
            }
            return(View(trekkingAgency));
        }
        public async Task <IActionResult> Edit(int id, [Bind("Id,Name,Height,ClimbingStatus,FirstAscentYear")] Peak peak)
        {
            if (id != peak.Id)
            {
                return(NotFound());
            }

            if (ModelState.IsValid)
            {
                try
                {
                    _context.Update(peak);
                    await _context.SaveChangesAsync();
                }
                catch (DbUpdateConcurrencyException)
                {
                    if (!PeakExists(peak.Id))
                    {
                        return(NotFound());
                    }
                    else
                    {
                        throw;
                    }
                }
                return(RedirectToAction(nameof(Index)));
            }
            return(View(peak));
        }