9/19/2023 0 Comments Asp.net core ef migration commandto remove last created migration: cd to_your_project then dotnet ef migrations remove.removing a migration can only be done, if the migration is not applied to the database.removing a migration deletes the file from your project (which should be clear for everyone).net core 3.1, but should be compatible with all other generations as well removing migrations: So i'll write down a clear explanation, and what you have to notice.Īll the commands will be written using dotnet. I don't understand why we are confusing things up here. use the remove commands to remove them from the project. ![]() Note: this will not remove the migration files related to mysecondmigration. ![]() this will also remove mysecondmigration entry from the _efmigrationshistory table in the database. The above command will revert the database based on a migration named myfirstmigration and remove all the changes applied for the second migration named mysecondmigration. in this case, use the update-database command to revert the database to the specified previous migration snapshot.ĭotnet ef database update myfirstmigration. but, for some reason, you want to revert the database to the previous state. Suppose you changed your domain class and created the second migration named mysecondmigration using the add-migration command and applied this migration to the database using the update command. if the migration has been applied to other databases, consider reverting its changes using a new migration. The migration has already been applied to the database. please note that if a migration is already applied to the database, then it will throw the following exception. The above commands will remove the last migration and revert the model snapshot to the previous migration. use the following remove commands to remove the last created migration files and revert the model snapshot. You can remove the last migration if it is not applied to the database. In our case run the remove migration command twice. If you haven't applied the migration to the db Note: since we have two bad migrations run the remove migration command twice. eg: update-database -migration lastgoodmigration Note: the name should be without date prefix. ![]() If you have already applied the migration to the db like in the question Let's say you have the following migrations in your code: these commands are for package manager console. Look at this SO answer: "You should just need to update the tools section of your project.json file to include this:" " the question itself deals with a first migration this answer is for anyone who is here looking for way to revert their last migration since most answers do not cover the alternate scenarios (for most of us it's not our first migration and we cannot wipe the entire migration history). leave out version option it will install latest Install-Package or this will work inside the CLI Consoleĭotnet add package -version 2.0.1 This will install the correct core tools // Package Manger In powershell CLI type this -> dotnet ef migrations add InitialMigration No context type was found in the assembly 'NewConsole'. When I tried Enable-Migrations, I got this error: (In Visual Studio you can use the Enable-MigrationsĬommand from Package Manager Console to add a migrations No migrations configuration type was found in the assembly I noticed that there's no command for Enable-Migrations in ef core from the official docs ![]() Protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder) I have a very simple model class, and this context: public class ContextCore : DbContext
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