Entity frameworkカスタムマッピング

続きをつける
方法1:Attributeの使用

    class Program
    {
        static void Main(string[] args)
        {
            HelloDbContext context = new HelloDbContext();
            var p1 = new Person() { Id = 1, Name = "Jim" };
            var p2 = new Person() { Id = 2, Name = "Tom" };
            context.Persons.Add(p1);
            context.Persons.Add(p2);

            context.SaveChanges();
        }
    }

    public class HelloDbContext : DbContext
    {
        private static string _connStr =
            @"Data Source=(LocalDB)\MSSQLLocalDB;AttachDbFilename=E:\code\gits\EntityFramework6\HelloEF\HelloEFDb.mdf;Integrated Security=True";

        public DbSet Persons { get; set; }

        public HelloDbContext():base(_connStr)
        {

        }
    }

    [Table("persons")]
    public class Person
    {
        [Column("person_id")]
        public int Id { get; set; }
        [Column("person_name")]
        public string Name { get; set; }
    }

方法2:DbContext.OnModelCreatingを書き換える

    class Program
    {
        static void Main(string[] args)
        {
            HelloDbContext context = new HelloDbContext();
            var p1 = new Person() { Id = 1, Name = "Jim" };
            var p2 = new Person() { Id = 2, Name = "Tom" };
            context.Persons.Add(p1);
            context.Persons.Add(p2);

            context.SaveChanges();
        }
    }

    public class HelloDbContext : DbContext
    {
        private static string _connStr =
            @"Data Source=(LocalDB)\MSSQLLocalDB;AttachDbFilename=E:\code\gits\EntityFramework6\HelloEF\HelloEFDb.mdf;Integrated Security=True";

        public DbSet Persons { get; set; }

        public HelloDbContext():base(_connStr)
        {

        }

        protected override void OnModelCreating(DbModelBuilder modelBuilder)
        {
            //base.OnModelCreating(modelBuilder);
            var entity = modelBuilder.Entity();
            entity.ToTable("persons");
            entity.Property(m => m.Id).HasColumnName("person_id");
            entity.Property(m => m.Name).HasColumnName("person_name");
        }
    }
    
    public class Person
    {        
        public int Id { get; set; }        
        public string Name { get; set; }
    }