How to see more Errors and information while debugging

Question

Im trying to figure out a code that is not working

but I recieve no information  even when i go to 

Tools > options -> project and solutions -> build and run

 

I would like to see feedback from every step I take 

In that way i can figure out how to fix the problem 

right now i have no clue.

 

this is my code :

public async Task<IActionResult> Create([Bind("ProductId,ProductTitle,ProductDiscription,Price,quantity,HeaderImage")] ProductWithImages productWithImages, ProductImages productImages)
      {
              Guid NewProductId = Guid.NewGuid();
              string uploadPath = Path.Combine(_webhostenv.WebRootPath, "Images2");

              if (ModelState.IsValid)
              {

                  string FileName = Guid.NewGuid().ToString() + productWithImages.HeaderImage.FileName;
                  string FilePath = Path.Combine(uploadPath, FileName);
                  productWithImages.HeaderImage.CopyTo(new FileStream(FilePath, FileMode.Create));

                  ProductWithImagesDb newproduct = new ProductWithImagesDb()
                  {
                      ProductId = NewProductId,
                      ProductTitle = productWithImages.ProductTitle,
                      ProductDiscription = productWithImages.ProductDiscription,
                      Price = productWithImages.Price,
                      quantity = productWithImages.quantity,
                      HeaderImage = FileName,

                  };
   _context.Add(newproduct);
                  await _context.SaveChangesAsync();
                  return RedirectToAction(nameof(Index));
              }

          return View();

 it skips the "if(ModelState.IsValid)"

While all field where filled (I get no red "asp-validation-for" warning text as wel)

 and I get no error or information whatso ever

if you are an expert in coding you probably would see the problem

but as a beginner like me it makes it pretty difficult figering out problems

and to learn from those mistakes.