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EntityFramework ForeignKey via Id snippet From dropdown combobox parse

public virtual Staff AssignedTo { get; set; }

    [ForeignKey("AssignedTo")]
    public int AssignedToId { get; set; }

    public void SetAssignedTo(string id)
    {
        if (int.TryParse(id, out int i)) AssignedToId = i;
    }