✅ NullReferenceException for a array of bytes (image)

Al3mid3x · 2024-06-27T11:50:48.028Z

hey everybody i'm new to ASP.NET i was doing a small ecommerce project and i want to add a default picture for the product if not exists but i keep getting null error on the if statement that checks if its null. here is a picture of the error keeps appearing in visual studio

C

canton7•6/27/24, 11:51 AM

Model

Model

Model

Model is null

A

Al3mid3xOP•6/27/24, 11:52 AM

well i'm trying to create a new product (which is the model used for this page)

A

Al3mid3xOP•6/27/24, 11:53 AM

@model Giftos.Entities.Product

@model Giftos.Entities.Product

@model Giftos.Entities.Product

@model Giftos.Entities.Product

A

Al3mid3xOP•6/27/24, 11:53 AM

and here is my Product class

c#
using System.ComponentModel.DataAnnotations;

namespace Giftos.Entities
{
    public class Product
    {
        [Key]
        public Guid Id { get; set; }

        [Required(ErrorMessage = "This field is required.")]
        public string Name { get; set; }

        [Required(ErrorMessage = "This field is required.")]
        public string Description { get; set; }

        [Required(ErrorMessage = "This field is required.")]
        public int Stock { get; set; }

        [Required(ErrorMessage = "This field is required.")]
        public int Price { get; set; }
        public byte[] Image { get; set; }




        public Product(string name, string description, int price, int stock)
        {
            Name = name;
            Description = description;
            Price = price;
            Stock = stock;
        }

        public Product() { }
    }
}

c#
using System.ComponentModel.DataAnnotations;

namespace Giftos.Entities
{
    public class Product
    {
        [Key]
        public Guid Id { get; set; }

        [Required(ErrorMessage = "This field is required.")]
        public string Name { get; set; }

        [Required(ErrorMessage = "This field is required.")]
        public string Description { get; set; }

        [Required(ErrorMessage = "This field is required.")]
        public int Stock { get; set; }

        [Required(ErrorMessage = "This field is required.")]
        public int Price { get; set; }
        public byte[] Image { get; set; }




        public Product(string name, string description, int price, int stock)
        {
            Name = name;
            Description = description;
            Price = price;
            Stock = stock;
        }

        public Product() { }
    }
}

c#
using System.ComponentModel.DataAnnotations;

namespace Giftos.Entities
{
    public class Product
    {
        [Key]
        public Guid Id { get; set; }

        [Required(ErrorMessage = "This field is required.")]
        public string Name { get; set; }

        [Required(ErrorMessage = "This field is required.")]
        public string Description { get; set; }

        [Required(ErrorMessage = "This field is required.")]
        public int Stock { get; set; }

        [Required(ErrorMessage = "This field is required.")]
        public int Price { get; set; }
        public byte[] Image { get; set; }




        public Product(string name, string description, int price, int stock)
        {
            Name = name;
            Description = description;
            Price = price;
            Stock = stock;
        }

        public Product() { }
    }
}

c#
using System.ComponentModel.DataAnnotations;

namespace Giftos.Entities
{
    public class Product
    {
        [Key]
        public Guid Id { get; set; }

        [Required(ErrorMessage = "This field is required.")]
        public string Name { get; set; }

        [Required(ErrorMessage = "This field is required.")]
        public string Description { get; set; }

        [Required(ErrorMessage = "This field is required.")]
        public int Stock { get; set; }

        [Required(ErrorMessage = "This field is required.")]
        public int Price { get; set; }
        public byte[] Image { get; set; }




        public Product(string name, string description, int price, int stock)
        {
            Name = name;
            Description = description;
            Price = price;
            Stock = stock;
        }

        public Product() { }
    }
}

A

Al3mid3xOP•6/27/24, 11:54 AM

ProductsController class

message.txt4.56KB

K

Kouhai•6/27/24, 11:56 AM

You need to provide a model instance to the view

KKouhai You need to provide a model instance to the view

A

Al3mid3xOP•6/27/24, 12:00 PM

can you tell me how to do it please as i said i'm new to asp.net

AAl3mid3x can you tell me how to do it please as i said i'm new to asp.net

K

Kouhai•6/27/24, 12:03 PM

// GET: Products/Create
public IActionResult Create()
{
    return View(new Product());
}

// GET: Products/Create
public IActionResult Create()
{
    return View(new Product());
}

// GET: Products/Create
public IActionResult Create()
{
    return View(new Product());
}

// GET: Products/Create
public IActionResult Create()
{
    return View(new Product());
}

Should do the trick

KKouhai ```cs // GET: Products/Create public IActionResult Create() { return View(ne...

A

Al3mid3xOP•6/27/24, 12:47 PM

Ye it did thank you

A

Al3mid3xOP•6/27/24, 12:48 PM

i have another thing i need help with should i open another post for it ?@canton7@Kouhai

C

canton7•6/27/24, 12:50 PM

Yes

C

canton7•6/27/24, 12:50 PM

$close

Ccanton7 $close

M

MODiX•6/27/24, 12:50 PM

If you have no further questions, please use /close to mark the forum thread as answered

✅ NullReferenceException for a array of bytes (image)

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