Question

In have two classes;

public class Item
{
    [Key]
    public int Id { get; set; }
    [Required]
    public string Name { get; set; }

    public virtual BinCard BinCard { get; set; }
}

and

public class BinCard
{
    [Key, DatabaseGenerated(DatabaseGeneratedOption.Identity)]
    public int Id { get; set; }
    [Required]
    public int ItemId { get; set; }
    [Required]
    public DateTime Date { get; set; }
    [Required]
    public double Qty { get; set; }

    public ObservableCollection<Item> Item { get; set; }
}

The BinCard.Id is the PK and auto increments.

I want the relationship between two tables using Item.Id and BinCard.ItemId using*FluentAPI*.

Please help me to create this relationship correctly.

Answer 1

Thanks for all replies. This is the solution for my question.

public class BinCard
{
    [Key, DatabaseGenerated(DatabaseGeneratedOption.Identity)]
    public int Id { get; set; }
    [Required]
    public int ItemId { get; set; }
    [Required]
    public DateTime Date { get; set; }
    [Required]
    public double Qty { get; set; }

    public virtual Drug Drug { get; set; }
}

public class Item
{
    [Key]
    public int Id { get; set; }
    [Required]
    public string Name { get; set; }

    public ObservableCollection<BinCard> BinCard { get; set; }
}

protected override void OnModelCreating(DbModelBuilder modelBuilder)
{
    modelBuilder.Entity<Drug>()
            .HasRequired(s => s.Stock)
            .WithRequiredPrincipal(s => s.Drug);
}