Question

我有一个POCO曾经用EF

正确填充

public class CompanyToggle
{
    public Guid CompanyId { get; private set; } // CompanyId (Primary key)
    public int ToggleId { get; private set; } // ToggleId (Primary key)
    public bool IsEnabled { get; private set; } // IsEnabled

    // Foreign keys

    /// <summary>
    /// Parent Company pointed by [CompanyToggle].([CompanyId]) (FK_CompanyToggle_Company)
    /// </summary>
    public virtual Company Company { get; private set; } 

    /// <summary>
    /// Parent Toggle pointed by [CompanyToggle].([ToggleId]) (FK_CompanyToggle_Toggle)
    /// </summary>
    public virtual Toggle Toggle { get; private set; }

    // For EF
    private CompanyToggle()
    { }
}

然后我添加了另一个Ctor：

public CompanyToggle(Guid companyId, int toggleId, bool isEnabled)
    {
        this.CompanyId = companyId;
        this.ToggleId = toggleId;
        this.IsEnabled = isEnabled;
    }

我的Fluent API绑定是这样的：

public class CompanyToggleConfiguration: EntityTypeConfiguration<CompanyToggle>
{
    public CompanyToggleConfiguration()
        : this("dbo")
    {
    }

    public CompanyToggleConfiguration(string schema)
    {
        ToTable("CompanyToggle", schema);
        HasKey(x => new { x.CompanyId, x.ToggleId });

        Property(x => x.CompanyId).HasColumnName(@"CompanyId").HasColumnType("uniqueidentifier").IsRequired().HasDatabaseGeneratedOption(System.ComponentModel.DataAnnotations.Schema.DatabaseGeneratedOption.None);
        Property(x => x.ToggleId).HasColumnName(@"ToggleId").HasColumnType("int").IsRequired().HasDatabaseGeneratedOption(System.ComponentModel.DataAnnotations.Schema.DatabaseGeneratedOption.None);
        Property(x => x.IsEnabled).HasColumnName(@"IsEnabled").HasColumnType("bit").IsRequired();

        // Foreign keys
        HasRequired(a => a.Company).WithMany(b => b.CompanyToggles).HasForeignKey(c => c.CompanyId).WillCascadeOnDelete(true); // FK_CompanyToggle_Company
        HasRequired(a => a.Toggle).WithMany(b => b.CompanyToggles).HasForeignKey(c => c.ToggleId).WillCascadeOnDelete(true); // FK_CompanyToggle_Toggle
    }
}

添加新的公共Ctor后，从上下文加载对象只加载CompanyId和ToggleId，并使Toggle和Company对象都为空。

我可以通过将CompanyToggle无参数Ctor公开来修复它，但我想将它保密。

知道为什么来自EF的这种行为？在我看来，EF正在寻找最容易接近的Ctor！

多个构造函数首先使用Entity Framework数据库

0 个答案: