Best answer: How do I enable migration in code first?

Go to Package Manager Console and type command help migration. Type Enable-Migrations -ContextTypeName EXPShopContext. This command creates a migration folder with InitialCreate.

How do I turn on automatic migration?

Open the Package Manager Console from Tools → Library Package Manager → Package Manager Console and then run the enable-migrations –EnableAutomaticMigration:$true command (make sure that the default project is the project where your context class is).

What enable migrations do?

EnableMigrations: Enables the migration in your project by creating a Configuration class. Add-Migration: Creates a new migration class as per specified name with the Up() and Down() methods.

What is ADD migration in database first approach?

To do this, Suppose that you have the following DbContext that EF Db first created for you: public class MyDbContext : DbContext { public MyDbContext() : base(“Name=DefaultConnection”) { } // DbSets … } change that to the following to start using code first and all magic tools of it (migration, etc.):

What is automatic migration in Entity Framework?

Automatic Migrations allows you to use Code First Migrations without having a code file in your project for each change you make. Not all changes can be applied automatically – for example column renames require the use of a code-based migration.

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How do you set Dbmigragrationsconfiguration AutomaticMigrationsEnabled to true to enable automatic migration?

Set DbMigrationsConfiguration. AutomaticMigrationsEnabled to true to enable automatic migration. You can use the Add-Migration command to write the pending model changes to a code-based migration. This error occurs when you have pending changes in your database migrations that have not been added yet.

How do I run EF migrations on deploy?

Right click your web project, click publish, use web deploy, go to your databases, target your new database, ensure Execute Code First Migrations is checked (this will run all the migrations you’ve done for your localdb on your new database). You don’t actually have to do this.

How do I update code first in database?

Update an Existing Database using Code First Migrations with ASP.NET and Entity Framework

  1. Enable-Migrations -ContextTypeName CodeFirstExistingDB.StoreContext.
  2. Add-Migration InitialCreate -IgnoreChanges.
  3. namespace CodeFirstExistingDB. { …
  4. Add-Migration add_product_description.
  5. namespace CodeFirstExistingDB.Migrations. {

Which command is used to run migration?

EF Migrations series

Enable-Migrations: Enables Code First Migrations in a project. Add-Migration: Scaffolds a migration script for any pending model changes. Update-Database: Applies any pending migrations to the database. Get-Migrations: Displays the migrations that have been applied to the target database.

How do I update my Entity Framework Core?

Open your ContextModel. edmx file to display the model diagram. Right-click anywhere on the design surface, and select Update Model from Database… In the Update Wizard, select the Refresh tab and select your table then click Finish button.

How do I update entity framework?

You need to upgrade to the new Entity Framework 6 runtime.

  1. Right-click on your project and select Manage NuGet Packages…
  2. Under the Online tab select EntityFramework and click Install. Note. If a previous version of the EntityFramework NuGet package was installed this will upgrade it to EF6.
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How do I run all migrations in Entity Framework?

So go into the Migration and comment out all the code inside the “Up” method. Now run update-database.

To fix this, You need to:

  1. Delete all *. cs files in the Migrations Folder.
  2. Delete the _MigrationHistory Table in the Database.
  3. Run Enable-Migrations -EnableAutomaticMigrations -Force.
  4. Run Add-Migration Reset.
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