public async Task <IActionResult> OnPostAsync() { if (!ModelState.IsValid) { return(Page()); } _context.Attach(CouponCategory).State = EntityState.Modified; try { await _context.SaveChangesAsync(); } catch (DbUpdateConcurrencyException) { if (!CouponCategoryExists(CouponCategory.Id)) { return(NotFound()); } else { throw; } } return(RedirectToPage("./Index")); }
public async Task <IActionResult> OnPostAsync() { if (!ModelState.IsValid) { ViewData["CategoryId"] = new SelectList(_context.CouponCategories, "Id", "Name"); ViewData["CustomerId"] = new SelectList(_context.Customers, "Id", "Name"); ViewData["SellerId"] = new SelectList(_context.Sellers, "Id", "Name"); return(Page()); } _context.Attach(Coupon).State = EntityState.Modified; try { await _context.SaveChangesAsync(); } catch (DbUpdateConcurrencyException) { if (!CouponExists(Coupon.Id)) { return(NotFound()); } else { throw; } } return(RedirectToPage("./Index")); }