用 Fluent API 设置元数据
http://agilenet.wordpress.com/2011/04/11/entity-framework-4-1-rc-with-an-existing-database/
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03 | public int Id { get; set; } |
04 | public string CompanyName { get; set; } |
05 | public Country HomeCountry { get; set; } |
10 | public int Id { get; set; } |
11 | public string Code { get; set; } |
12 | public string Name { get; set; } |
public class MyContext: DbContext
04 | public DbSet<Company> Companies { get; set; } |
05 | public DbSet<Country> Countries { get; set; } |
07 | public MyContext(string connectionString): base(connectionString) |
09 | Database.SetInitializer<MyContext>(null); |
12 | protected override void OnModelCreating(DbModelBuilder modelBuilder) |
14 | modelBuilder.Configurations.Add(new CountryConfiguration()); |
15 | modelBuilder.Configurations.Add(new CompanyConfiguration()); |
16 | base.OnModelCreating(modelBuilder); |
public class CompanyConfiguration: EntityTypeConfiguration<Company>
04 | public CompanyConfiguration(): base() |
10 | HasDatabaseGeneratedOption(DatabaseGeneratedOption.Identity). |
12 | Property(p => p.CompanyName). |
13 | HasColumnName("Name"). |
15 | HasRequired(x => x.HomeCountry). |
17 | Map(x => x.MapKey("HomeCountryId")); |
23 | public class CountryConfiguration: EntityTypeConfiguration<Country> |
26 | public CountryConfiguration(): base() |
31 | .HasDatabaseGeneratedOption(DatabaseGeneratedOption.Identity) |
34 | .HasColumnName("Code") |
37 | .HasColumnName("Name") |
posted on
2011-06-13 23:14
bela liu
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