one to many relationship

[Ahmad]

I have two model.
When I want to display a list of Product in grid, if PurchaseInvoiceDetail have records, Product grid show empty list,
and when i delete PurchaseInvoiceDetail records, Product's grid display list of product.
(I use Editing_Popup grid)

public class Product
    {
        [Key]
        [ScaffoldColumn(false)]
        public int ProductId { get; set; }
        public string Name { get; set; }
        public int Number { get; set; }

        public virtual ICollection<PurchaseInvoiceDetail> PurchaseInvoiceDetail { get; set; }
    }

public class PurchaseInvoiceDetail
    {
        [Key]
        public int PurchaseInvoiceDetailId { get; set; }
        public int Number { get; set; }
        public decimal PurchasePrice { get; set; }

        //Navigation Properties

        public int ProductId { get; set; }
        public virtual Product Product { get; set; }
    }

[Dimiter Madjarov]

Hi Ahmad,


The most probable reason for the issue is that a circular reference was detected when serializing th objects. It is caused because both of the classes have properties that reference to each other, which the JavaScript serialize cannot handle. As a resolution for this issue you should extract a ViewModel of the data, which excludes those properties. You could take a look at the following documentation page for additional details.

 

Regards,
Dimiter Madjarov
Telerik