DropCreateDatabaseAlways种子不叫 [英] DropCreateDatabaseAlways Seed not called

问题描述

我在获得种子法的问题要在我的自定义数据库初始化调用。我使用的是EF 5.0，并具有以下code：

I'm having an issue getting the Seed method to be called on my custom Database initializer. I'm using EF 5.0 and have the following code:

public static class MyDatabase
{
    public static void Initialize()
    {
        Database.SetInitializer(new MyInitializer());
    }
}

public class MyInitializer : DropCreateDatabaseAlways<MyContext>
{
    protected override void Seed(MyContext context)
    {
        base.Seed(context);
        context.Roles.Add(new Role
        {
            ID = 1,
            Name = "User",
        });
        context.Roles.Add(new Role
        {
            ID = 2,
            Name = "Admin",
        });
        context.SaveChanges();
    }
}

这两个类从MVC应用程序一个单独的类库存在。在的Global.asax ，我称之为初始化（）方法：

MyDatabase.Initialize();

该数据库被创建就好了，它只是在种子（MyContext上下文）方法不叫并且没有数据被放入我的数据库。

The database gets created just fine, it's just the Seed(MyContext context) method isn't called and no data gets put into my database.

推荐答案

您的数据库将在后面当您使用上下​​文中创建或
你总是可以迫使它通过在Global.asax.cs中的的Application_Start（）方法使用上下文来创建这样的：

Your database will be created later on when you use your context or You could always force it to create by using your context in the Application_Start() method in Global.asax.cs like:

  System.Data.Entity.Database.SetInitializer(new MyInitializer());
MyContext db = new MyContext();
db.Database.Initialize(true);

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