EF6 code first add migration - where is the 'snapshot of the current code' stored?

EF6, Code-First, enable-migrations, "Unable to load the specified metadata resource"

IF you have more than one project in the solution, be sure that in the Package manager console window you have selected the project with dbContext....Migrations use connectionString with name equals DbContext class. In your case it's OrganisationsContext, but isn't Leegz_Entities_Organisations.

How to edit previously applied migration without adding another migration in EF code first

I have an applied migration using "haward" db schema....public partial class CreateCourseCategoryTable : DbMigration { public override void Up() { CreateTable( "haward.CourseCategories", c => new { Id = c.Int(nullable: false, identity: true),...

EF6 Code First - Configure One-to-One relationship with unmatched foreign keys

I'm using Code First to define the schema of an existing database. The problem I'm having is that they key names in the tables don't quite align. This works fine with one-to-many relationships because I can use the ...HasForeignKey()... method, but there does't seem to be an equivalent for one-to-one relationships. My table definitions are:...na...

How to update model working with EF code first with 'Code First from Database'

Go through the generation process, and during the generation process, it allows you to select tables. Select the newer ones only....Instead of selecting all tables, expand the little triangle and select what you need. You also will have to select any dependent tables, or else the process will fail. If those dependent tables are already there, just ...

Solutions with one EF6 model (db first) and one code first

I have a solution that has multiple databases. We are using EF6....We have one Project that is EF6 (code first), and one project that is EF6 DB first....var arkleModelDbFist = new Arkle.DAL.EF.ArkleEntities(); var CustomerOld= new Arkle.DAL.EF.Customer(); arkleModelDbFist.Customers.Add(CustomerOld); // Errors on this line arkleModelDbFist.SaveChang...

Environment specific EF6 Code First Migrations using VSTS Release

For Code First Migration, you can "Write App_Start code to run Migrations" or "Write Web.config transforms to configure the MigrateDatabaseToLatestVersion initializer to run", refer to this article for details: ...http://blogs.msdn.com/b/webdev/archive/2014/04/09/ef-code-first-migrations-deployment-to-an-azure-cloud-service.aspx...For the connectio...

Entity Framework Core 1.0 code-first migrations using code?

In previous versions of Entity Framework code-first migrations could be controlled programmatically with the DbMigrator class (e.g. check for and apply available migrations). Does that class still exist somewhere or is there a functional replacement? I found a post on an early RC version that indicated a substitute but that too seems to be missing ...

How to do data migrations inside an EF Core code first migration?

I have a Code First EF Core project....In my schema migration, I need to do a data migration to an external database. So I can't fall back on ...migrationBuilder.Sql().... What I need to do is run a query on the local database and insert the data returned into the external database. In other words, I want to do something like this:...// Obviousl...

Can I inject dependency into migration (using EF-Core code-first migrations)?

you cannot, the migrations need to be able to run outside the context of your application. ...Since the Entity-framework command-line tool analyzes your code but does not run the startup.cs class....Also it is not advisable. your migrations should be plain simple and not depend on anything. if it would, it could lead to major runtime side-effects w...

How to add description to columns in Entity Framework Core code-first using migrations?

I am using Entity Framework Core 3.0 code. How do I add descriptions for columns in entity configuration classes or migrations so that they end up as a column description in SQL Server?...There is a publication for Entity Framework 4.3.1 but I could not do it in the Entity Framework Core.