如何使用Entity Framework将POCO模型类映射到现有数据库表

Question

We have existing POCO model classes and an existing DB. The OO model classes and relational DB tables don't map directly to each other.

How do I use Entity Framework to map these? All of the tutorials I have seen are either Code First (which goes and generates new DB tables), Model first (which generates new DB tables and POCOs) and DB First (which generates new POCOs).

I want none of these! I want to map between existing POCOs and DB tables. What's the best way of doing this? Can I use the visual designer, or do I have to do it in code?

Answer 1

Create mappings which map your entities to database structure (I suggest to use fluent mappings). Then just disable database generation:

Database.SetInitializer<YourContext>(null);

and provide connection string to existing database:

public class YourContext : DbContext
{
    public DatabaseContext(string connectionStringName)
      : base(connectionStringName)
    {
    }
}