Uploading images in MVC 5

[PsychoCoder]

I'm currently working on an image gallery (or products with their images) and am getting a weird error in the UploadImageMethod in my ProductsController. Here's the method, then I'll explain where the error is:

 [HttpPost]
    public ActionResult UploadImageMethod()
    {
        //make sure we have files to upload
        if (Request.Files.Count != 0)
        {
            //Parallel.For loop to loop through each image being uploaded
            Parallel.For(0, Request.Files.Count, index =>
                {
                    //new HttpPostedFileBase to hold each image with
                    HttpPostedFileBase file = Request.Files[index];
 
                    //get the file size
                    int size = file.ContentLength;
 
                    //get the file name
                    string name = file.FileName;
 
                    //save the image to our desired directory
                    file.SaveAs(Server.MapPath("~/Content/ProductImages/") + name);
 
                    //now create a new Product and set it's properties
                    Product p = new Product()
                    {
                        ProductId = Guid.NewGuid(),
                        ProductName = name,
                        ProductImages.Add(new ProductImage() { Path = Server.MapPath("~/Content/ProductImages/") + name, AltText = name })
                    };
 
                    //add it to the database
                    db.Products.Add(p);
 
                    //save the changes
                    db.SaveChanges();
                });
            return Content("Success");
        }
        return Content("failed");
    }
    }

I'm getting the error on this line:

 ProductImages.Add(new ProductImage() { Path = Server.MapPath("~/Content/ProductImages/") + name, AltText = name })

It says "invalid initializer member declarator" , it also says ProductImages does not exist in the current context. If you need to see the Product class here it is:

public class Product
    {
        public Product()
        {
            ProductImages = new List<ProductImage>();
        }
 
        public int ProductId { get; set; }
 
        public string ProductName { get; set; }
        public double ProductPrice { get; set; }
        public int ProductQuantity { get; set; }
 
        public virtual List<ProductImage> ProductImages { get; set; }
    }

Can someone tell me what I'm doing wrong?