C# 向具有2个外键的表中添加行时出错

我正在使用EntityFramework4，SQLite数据库和数据库优先的方法。我已将我的表结构附加为快照

我能够在Bnb_公司和Bnb_玩家表中写入/读取数据，但是当我尝试在Bnb_游戏表中输入一行时，我得到以下错误

“MockStockDbEntities.Bnb_游戏”中的实体参与“Bnb_公司Bnb_游戏”关系。找到0个相关的“Bnb_公司”。预计将有1家“Bnb_公司”

//Reset company values
if (context.Bnb_Company.Count() > 0)
{
    var companydetails = context.Bnb_Company.ToList();
    foreach (var company in companydetails)
    {
        company.ESC = 0;
        company.MarketValue = company.FaceValue;
    }
    context.SaveChanges();
}

if (context.Bnb_Player.Count() > 0)
{
    var playerDetails = context.Bnb_Player.ToList();
    //Reset Player values
    foreach (var player in playerDetails)
    {
        player.NetAmount = 0;
        player.Amount = 1000;
        if (context.Bnb_Company.Count() > 0)
        {
            var companyDetails = context.Bnb_Company.ToList();
            foreach (var company in companydetails)
            {
                if (context.Bnb_Game.Count() > 0 && (context.Bnb_Game.Where(b => b.PlayerId == player.Id && b.CompanyId == company.Id).Count() > 0))
                {
                    var specificCompanyShare = context.Bnb_Game.Where(b => b.PlayerId == player.Id && b.CompanyId == company.Id).FirstOrDefault();
                    specificCompanyShare.Shares = company.DefaultShares;
                }
                else
                {
                    Bnb_Game playerCompanyShare = new Bnb_Game();
                    playerCompanyShare.CompanyId = company.Id;
                    playerCompanyShare.PlayerId = player.Id;
                    playerCompanyShare.Shares = company.DefaultShares;
                    context.Bnb_Game.AddObject(playerCompanyShare);
                }
            }
        }

    }
    context.SaveChanges();
}

---

尝试使用实体引用而不是Id值

 Bnb_Game playerCompanyShare = new Bnb_Game();
 playerCompanyShare.Bnb_Company = company;
 playerCompanyShare.Bnb_Player = player;
 playerCompanyShare.Shares = company.DefaultShares;
 context.Bnb_Game.AddObject(playerCompanyShare);

---

在System.Data.EntityClient.EntityAdapter.Update（在System.Data.Objects.ObjectContext.SaveChanges（）的System.Data.Mapping.Update.Internal.UpdateTranslator.Update（在System.Data.EntityClient.EntityAdapter.Update（在System.Data.Objects.ObjectContext.SaveChanges（保存选项选项选项））中在D:\MockStock\BullsNBearsV4\BullsNBears\BnbBusiness\BnbComponent.cs中的BnbBusiness.BnbComponent.ResetDataBase（）处：在D:\MockStock\BullsNBearsV4\BullsNBears\UnitTestProject\bnbcomponents.cs中的UnitTestProject.bnbcomponents.ResetDataBaseTest（）处的第485行：不工作。。内部异常为“{”SQL逻辑错误或缺少数据库\r\ntable Bnb_Game没有名为Bnb_Company_Id的列“}”？检查数据库和模型中是否正确定义了外键。我已经在模型中定义了外键。如何在数据库中检查/定义？我使用了“Sqlite管理员”工具来创建表。请检查此处的信息，我认为它可以帮助您正确设置导航属性