新创建的 EF 代码第一个表的 SQL Server 外键窗口问题

Question

I don't know if anyone face this issue or it's just something else.

I am using a EF code-first architecture.

Here is my first class :

public class PerformanceSurchargeGeneralSettings : FullAuditedEntity
{
    public int PerformanceID { get; set; }
    public Performance Performance { get; set; }

    public int SurchargeId { get; set; }
    public Surcharges Surcharge { get; set; }
}

And here is the second class:

public class Surcharges : FullAuditedEntity
{
    public  string Name { get; set; }

    public ICollection<PerformanceSurchargeGeneralSettings> PerformanceSurchargeGeneralSettings{ get; set; }
}

Everything works fine, I can add migration, update my database but if I go to table and check for foreign key reference, I can't see primary key table. See this screenshot here:

I am not able to find newly added table that is Surcharge in the dropdown of primary key table.

And if I execute SP_help for this table, I can find all foreign keys, see the screenshot:

I don't understand where exactly the issue is ...

Answer 1

H,

Change your classes as below;

[Table("PerformanceSurchargeGeneralSettings")]
public class PerformanceSurchargeGeneralSetting : FullAuditedEntity
{
    [ForeignKey("PerformanceId")]
    public virtual Performance Performance { get; set; }
    public int PerformanceId { get; set; }

    [ForeignKey("SurchargeId")]
    public virtual Surcharge Surcharge { get; set; }
    public int SurchargeId { get; set; }    
}

---

[Table("Surcharges")]
public class Surcharge : FullAuditedEntity
{
    [MaxLength(128)]
    public string Name { get; set; }

    public virtual ICollection<PerformanceSurchargeGeneralSetting> PerformanceSurchargeGeneralSettings{ get; set; }
}

---

My advises

• Use singular names for classes. Surcharges => Surcharge.
• Give MaxLength to string properties.
• Use the same case for all Id fields. PerformanceID => PerformanceId. (like you did for SurchageId).
• Add virtual key when you want to load data with lazy loading.