CODEWITHSUNDEEP
c#asp.net-mvcentity-framework
TobusBoulton
TobusBoulton

Reputation: 181

Controller Scaffolding Issue

I'm trying to scaffold a controller for the following model for EF but I'm receiving:

Unable to retrieve metadata for 'Project.Models.ItemModel'.

Value cannot be null.

Parameter name: entitySet'

Is it trying to retrieve something from somewhere but cant?

ItemModel

public class ItemModel
{
    public class ItemPicture
    {
        [Key, ForeignKey("ItemModel")]
        public virtual int ItemID {get;set;}

        public HttpPostedFileBase Image { get; set; }

        public virtual ItemModel ItemModel { get; set; }
    }


    [Key]
    public int ItemID { get; set; }

    [Required(ErrorMessage ="{0} is required.")]
    [Display(Name ="Item Name")]
    public string ItemName { get; set; }

    [Required(ErrorMessage = "{0} is required.")]
    [Display(Name = "Item Description")]
    [DataType(DataType.MultilineText)]
    public string ItemDesc { get; set; }

    [Required(ErrorMessage = "{0} is required.")]
    [Display(Name = "Item Price")]
    public decimal ItemPrice { get; set; }

    public virtual ItemPicture Picture { get; set; }

    [Required(ErrorMessage = "{0} is required.")]
    [Display(Name = "Enable Front Feature")]
    public bool FrontFeature { get; set; }
}

Upvotes: 2

Views: 335

Answers (1)

Jelle Oosterbosch
Jelle Oosterbosch

Reputation: 1742

Tried it myself... don't think you should store HttpPostedFileBase as a property of your model, well at least not map it via EntityFramework and let it automatically scaffold. If you think about it - what database fields do you think this property type would map to?

If you want to actually store the binary data in your database, use the following:

public byte[] File { get; set; }

Upvotes: 1

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