ASP. NET core EF core (Entity Framework 7) Database Update maintenance

Createdata-baseifnotexists, such as the previous API has been deprecated, is now using the Microsoft packaged, simplified, efficient API,migrations

Because the old API has to pay a high price, and the limitations

Open VS2017, select Tools->nutget Package Manager--Packages Manager console

1. Enter add-migration myfirstmigration instruction

The Migrations folders and files are automatically generated based on the current DbContext, which are used to create or extend a database that is specifically owned by the Migrations API.

Then in ASP. Startup.cs file, public void Configure (Iapplicationbuilder app, Ihostingenvironment env, iloggerfactory Loggerfactory)

Configure this function, plus

2.update-database Upgrading the Database

[CSharp]View PlainCopyprint?

1. using (var servicescope = app. Applicationservices.getrequiredservice<iservicescopefactory> (). Createscope ())
2. {
3. Servicescope.serviceprovider.getservice<unicornstorecontext> (). Database.migrate ();
4. Servicescope.serviceprovider.getservice<applicationdbcontext> (). Database.migrate ();
5. Servicescope.serviceprovider.getservice<unicornstorecontext> (). Ensureseeddata ();
6. }

Replace your own function with the code above to

You can then generate a proprietary database of Mingrations APIs based on the files in the generated Mingrations folder, automatically scaling, and upgrading the database

Reprint: http://blog.csdn.net/loongsking/article/details/63682952

ASP. NET Core EF core (Entity Framework 7) database Update maintenance