public async Task <IActionResult> OnPostAsync() { if (!ModelState.IsValid) { return(Page()); } var dailyStatistics = _context.DailyStatistics.Find(DailyStatistic.Id); _context.Entry(dailyStatistics).CurrentValues.SetValues(DailyStatistic); try { await _context.SaveChangesAsync(); } catch (DbUpdateConcurrencyException) { if (!DailyStatisticExists(DailyStatistic.Id)) { return(NotFound()); } else { throw; } } return(RedirectToPage("./Index")); }