EF Code First之困扰

Database.SetInitializer<ShopContext>(null);

Database.SetInitializer(new DropCreateDatabaseAlways<MyContext, DAL.Configuration>());

Database.SetInitializer(new DropCreateDatabaseIfModelChanges<MyContext, DAL.Configuration>());

Database.SetInitializer(new MigrateDatabaseToLatestVersion<MyContext, DAL.Migrations.Configuration>());

 1 public class Configuration : DbMigrationsConfiguration<MyContext>
 2     {
 3         public Configuration()
 4         {
 5             //允许代码自动迁移数据库
 6             AutomaticMigrationsEnabled = true;
 7             //允许自动迁移时数据丢失（如删除列）
 8             AutomaticMigrationDataLossAllowed = true;
 9         }
10 
11         protected override void Seed(MyContext context)
12         {
13             context.Account.AddOrUpdate(o => o.AccountName, new SH_Account
14             {
15                 AccountName = "admin",
16                 NickName = "管理员",
17                 AccountPwd = "123456",
18                 Email = "4564589@qq.com",
19                 Phone = "13289463547"
20             });
21          }
22     }