Complexity.cs

[HttpPost("/productCrud/{sku}")]
public async Task<IActionResult> UpdateProduct([FromRoute] string sku, [FromForm]CatalogProduct product)
{
    var record = await _catalogDbContext.Products.SingleOrDefaultAsync(x => x.Sku == sku);

    if (product == null)
    {
        return NotFound();
    }

    record.Description = product.Description;
    record.Name = product.Name;
    record.Price = product.Price;
    record.Cost = product.Cost;
    record.QuantityOnHand = product.QuantityOnHand;
    record.ForSale = product.Price > 0 && product.QuantityOnHand > 0 && product.ForSale;
    record.FreeShipping = product.FreeShipping;

    await _catalogDbContext.SaveChangesAsync();

    return RedirectToAction("GetProduct", new { sku = sku });
}