使实体框架生成的实体实现接口

嗨，我有这个接口：

public interface X {
int Id { get; set; }
int Number { get; set; }
}

我想要一个由实体框架生成的具有此属性的实体来实现此接口。我是怎么做的？我试图做一个分部类，但我遇到了一个编译错误，迫使我在接口中实现属性，如下所示。

public partial class A : X {
int Id { get; set; }
int Number { get; set; }
}

这是实体框架生成的类：

//------------------------------------------------------------------------------
// <auto-generated>
//     This code was generated from a template.
//
//     Manual changes to this file may cause unexpected behavior in your application.
//     Manual changes to this file will be overwritten if the code is regenerated.
// </auto-generated>
//------------------------------------------------------------------------------
namespace App
{
using System;
using System.Collections.Generic;
public partial class A
{
[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Usage", "CA2214:DoNotCallOverridableMethodsInConstructors")]
public A()
{
}
public int Id { get; set; }
public int Number { get; set; }
}
}

我有这些当前文件：

namespace ConfApp.model
{
using System;
using System.Collections.Generic;
public partial class INSTITUICAO
{
[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Usage", "CA2214:DoNotCallOverridableMethodsInConstructors")]
public INSTITUICAO()
{
this.UTILIZADOR = new HashSet<UTILIZADOR>();
}
public int Id { get; set; }
public string Nome { get; set; }
public string Morada { get; set; }
public string Pais { get; set; }
[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Usage", "CA2227:CollectionPropertiesShouldBeReadOnly")]
public virtual ICollection<UTILIZADOR> UTILIZADOR { get; set; }
}
}

namespace ConfApp.model {
public interface IInstituicao {
int Id { get; set; }
String Nome { get; set; }
String Morada { get; set; }
String Pais { get; set; }
}
}

namespace ConfApp.model {
public partial class INSTITUICAO: IInstituicao {
}
}

由于实体框架生成的类已经包含接口的属性，因此只需在类A上声明接口。

整个图片可能包括以下3个文件
请确保这些分部类的名称和命名空间匹配，并且两个.cs文件都是同一Visual Studio项目的一部分

接口X.cs
(按照惯例，在接口前面加上I，如在IX中一样。(

namespace App
{
public interface X {
int Id { get; set; }
int Number { get; set; }
}
}

实体框架A.cs生成的类
(保持自动生成的类原样，如下所示。(

//------------------------------------------------------------------------------
// <auto-generated>
//     This code was generated from a template.
//
//     Manual changes to this file may cause unexpected behavior in your application.
//     Manual changes to this file will be overwritten if the code is regenerated.
// </auto-generated>
//------------------------------------------------------------------------------
namespace App
{
using System;
using System.Collections.Generic;
public partial class A
{
[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Usage", "CA2214:DoNotCallOverridableMethodsInConstructors")]
public A()
{
}
public int Id { get; set; }
public int Number { get; set; }
}
}

A.partial.cs中A类上接口X的声明

namespace App
{
public partial class A : X {
}
}

public interface IBaseEntity {
int Id { get; set; }
int Number { get; set; }
}

假设您有实体框架生成的StudentEntity.cs

namespace MyProject.DAL.Entities
{
public partial class StudentEntity
{ }
}

创建新的文件StudentEntityExtended.cs，并在其中放入您的分部类

namespace MyProject.DAL.Entities
{
public partial class StudentEntity : IBaseEntity {
}
}

然后

public class SchoolContext: DbContext 
{
public SchoolContext(): base()
{
}
public DbSet<Student> Students { get; set; }
}

现在Students DbSet继承自BaseClass，因此具有来自其分支的属性

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