还原实体框架使用的本地Sql Server数据库

Question

I'm a beginner with the use of Entity Framework : I have done a web application using EF so i created a local Sql Server database and i added a context class EFDbContext .

When i run the application in another machine i got this error :

The model backing the 'EFDbContext' context has changed since the database was created. Consider using Code First Migrations to update the database (http://go.microsoft.com/fwlink/?LinkId=238269).

i think it is because the local database is missing. So i need to know:

1. In a similaire case, How can i restore my database?
2. What are the differences between managing databases with Sql Server Manager and the integrated connection tool in VS ?

Answer 1

As per comments, you can create the database in the new machine using Package Manager Console . Please follow the following steps.

(1). PM> enable-migrations 
(2). PM> add-migration db_migrationX 
(3). PM> update-database.

Note: you may not need (1) and (2) if you have created migrations before.