EF核心映射EntityTypeConfiguration

本文介绍了EF核心映射EntityTypeConfiguration的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

在EF6中，我们通常可以使用这种方式来配置实体。

In EF6 we usually able to use this way to configure the Entity.

public class AccountMap : EntityTypeConfiguration<Account> { public AccountMap() { ToTable("Account"); HasKey(a => a.Id); Property(a => a.Username).HasMaxLength(50); Property(a => a.Email).HasMaxLength(255); Property(a => a.Name).HasMaxLength(255); } }

自从我继承了无法找到该类的EntityTypeConfiguration。

How we can do in EF Core, since when the class I Inherit EntityTypeConfiguration that unable to find the class.

我从GitHub下载了EF Core原始源代码，但找不到。 有人可以帮忙吗？

I download the EF Core raw source code from the GitHub, I can't find it. Can someone help on this?

推荐答案

自EF Core 2.0起，就有 IEntityTypeConfiguration< TEntity> ; 。您可以像这样使用它：

Since EF Core 2.0 there is IEntityTypeConfiguration<TEntity>. You can use it like this:

class CustomerConfiguration : IEntityTypeConfiguration<Customer> { public void Configure(EntityTypeBuilder<Customer> builder) { builder.HasKey(c => c.AlternateKey); builder.Property(c => c.Name).HasMaxLength(200); } } ... // OnModelCreating builder.ApplyConfiguration(new CustomerConfiguration());

有关此功能以及2.0中引入的其他新功能的更多信息，请参见此处。

More on this and other new features introduced in 2.0 can be found here.