Entity Framewor中的 Migration

 1 internal sealed class Configuration : DbMigrationsConfiguration<Infrastructor.MainBoundedContext.UnitWorks.MainDBUnitWorkContext>
 2     {
 3         public Configuration()
 4         {
 5             AutomaticMigrationsEnabled = true;
 6             ContextKey = "Infrastructor.MainBoundedContext.UnitWorks.MainDBUnitWorkContext";
 7         }
 8 
 9         protected override void Seed(Infrastructor.MainBoundedContext.UnitWorks.MainDBUnitWorkContext context)
10         {
11             //  This method will be called after migrating to the latest version.
12 
13             //  You can use the DbSet<T>.AddOrUpdate() helper extension method 
14             //  to avoid creating duplicate seed data. E.g.
15             //
16             //    context.People.AddOrUpdate(
17             //      p => p.FullName,
18             //      new Person { FullName = "Andrew Peters" },
19             //      new Person { FullName = "Brice Lambson" },
20             //      new Person { FullName = "Rowan Miller" }
21             //    );
22             //
23             context.Status.AddOrUpdate(p => p.Name,
24                 new Status { Name = "通过" },
25                 new Status { Name = "等待审批" }
26                 );
27         }
28     }

public MainDBUnitWorkContext(string connectionString)
: base(connectionString)
{
//this.Configuration.ProxyCreationEnabled = false;
this.Configuration.LazyLoadingEnabled = true;

Database.SetInitializer(new MigrateDatabaseToLatestVersion<MainDBUnitWorkContext,
Infrastructor.MainBoundedContext.Migrations.Configuration>("MyDBConnectionString"));
}