自创建数据库以来，支持'ApplicationDbContext'上下文的模型已更改。将项目上载到服务器时

Question

为什么我发现这个错误：

The model backing the 'ApplicationDbContext' context has changed since the database was created. This could have happened because the model used by ASP.NET Identity Framework has changed or the model being used in your application has changed. To resolve this issue, you need to update your database. Consider using Code First Migrations to update the database (http://go.microsoft.com/fwlink/?LinkId=301867).  Before you update your database using Code First Migrations, please disable the schema consistency check for ASP.NET Identity by setting throwIfV1Schema = false in the constructor of your ApplicationDbContext in your application.
public ApplicationDbContext() : base("ApplicationServices", throwIfV1Schema:false)

当我将项目上传到服务器时也会发生此错误，但它在本地运行良好。 我的应用程序上下文代码是：

public class ApplicationDbContext : IdentityDbContext<ApplicationUser>
{
   public ApplicationDbContext()
            : base("DefaultConnection",throwIfV1Schema : false)
   {
   }
}

知道我在AppStart {}

中添加此代码

Database.SetInitializer<ApplicationDbContext>(null);