EF中类EntityTypeConfiguration是一个很有用的类,在nopCommerence中就使用这个类来分文件分文件配置Model映射关系。今天我就来谈谈Repository模式在Entity Framework Code First中使用EntityTypeConfiguration的实现例子。 背景 为了简化我们就只使用两个表:分类表Category,产品类Product。最终项目结构如下: 注意:EfRepPatTest....
一、EntityTypeConfiguration类: EntityTypeConfiguration类在Fluent API中有着重要的作用,它提供了一系列重要的方法和属性来覆写默认约定。 EntityTypeConfiguration类可以运行DbModelBuilder类的Entity<TEntity>()方法获得,如下所示: EntityTypeConfiguration有下面这些重要的方法: 可以访问MSDN查询更多关于EntityTypeConfiguratio...
publicclassAuthenticationAttemptEntity{publiclongId{get;set;}publicGuidStateId{get;set;}publicboolIsValid{get;set;}publicDateTimeOffsetCreatedAt{get;set;}publicDateTimeOffsetExpiringAt{get;set;}publicDateTimeOffsetConsumedAt{get;set;}} Configuration internalclassAuthenticationAttemptConfiguration:IEntityTypeConfigur...
usingFluentAPI.Model;usingSystem;usingSystem.Collections.Generic;usingSystem.ComponentModel.DataAnnotations.Schema;usingSystem.Data.Entity.ModelConfiguration;usingSystem.Linq;usingSystem.Text;usingSystem.Threading.Tasks;namespaceFluentAPI.Data.FluentAPIMap{publicclassDepartmentMap:EntityTypeConfiguration<Department> {p...
/// /// 用户表USERS的映射信息(Fluent API 配置)/// publicclassUserMap:EntityTypeConfiguration<User>{publicUserMap(){HasMany(e=>e.UserDetails).WithOptional(e=>e.User).HasForeignKey(e=>e.User_ID);Property(t=>t.ID).HasColumnName("ID");Property(t=>t.Account).HasColumnName("ACCOUNT")...
//Write Fluent API configurations here //Entity Configuration modelBuilder.Entity<Country>().HasKey(s => s.PId); //Property Configurations modelBuilder.Entity<Country>(entity => { entity.Property(e => e.Name) .HasColumnName("CountryName") ...
public AuditMultiTenantConfiguration() { } public void Configure(EntityTypeBuilder<AuditMultiTenant> builder) { builder.HasKey(k => k.AuditId); } } Here is the exception I get : System.InvalidOperationException: “Unable to resolve service for type ‘System.Collections.ICollection’ ...
The Property method is used to configure attributes for each property belonging to an entity or complex type. The Property method is used to obtain a configuration object for a given property. The options on the configuration object are specific to the type being configured; Is...
classBookEntityConfig:IEntityTypeConfiguration<Book>{publicvoidConfigure(EntityTypeBuilder<Book>builder){builder.ToTable("T_Books");}} 创建继承自DbContext的类 代码语言:javascript 复制 internalclassMyDbContext:DbContext{publicDbSet<Book>Books{get;set;}protectedoverridevoidOnConfiguring(DbContextOptionsBuilder...
Now create a class, theCustomerMapclass in theEF.Dataproject to implement the Fluent API configuration for theCustomerclass. C# Shrink ▲ usingSystem.ComponentModel.DataAnnotations.Schema;usingSystem.Data.Entity.ModelConfiguration;usingEF.Core.Data;namespaceEF.Data.Mapping ...