![]() ![]() options.UseSqlServer(connection, b => b.MigrationsAssembly("PVStore.Web")). + FullyQualifiedErrorId : NativeCommandErrorĬhange your migrations assembly by using DbContextOptionsBuilder. + CategoryInfo : NotSpecified: (Your target pro.tions assembly.:String), RemoteException Either change your target project or change your migrations assembly. Applying code-based migration: 201308012011085_Add PhoneNumber to User.Įntity Framework will in this case generate a script for the changes made from (excluding) the SourceMigration and include all migrations added since.The Issue dotnet : Your target project 'PVStore.Web' doesn't match your migrations assembly 'PVStore.Data'. PM> Update-Database -Script -SourceMigration:Initial Applying code-based migrations. This can be done by specifying a SourceMigration: Let’s say that our Initial migration was already created and now we just want to deploy the one where we added the phone number. While it is useful to get the full script, most of the time you need a script for the changes made since the last deployment. Notice that this will create a new table called _MigrationsHistory which is used by Entity Framework to keep track of migrations. Applying code-based migration: 201308012011085_Add PhoneNumber to User. PM> Update-Database -Script -SourceMigration:$InitialDatabase Applying code-based migrations. To get the full script of the entire schema, run this command: Instead, we need a script we can run against the database. When you need to deploy to production, it shouldn’t be done via the Package Manager Console and a Dev machine. PM> Update-Database Specify the '-Verbose' flag to view the SQL statements being applied to the target database. This is as easy as calling the Update-Database command: Notice that it’s perfectly valid to use real descriptions as names – just remember the quotation marks. If you make additional changes to your model that you want to include in this migration, then you can re-scaffold it by running 'Add-Migration 201308012011085_Add PhoneNumber to User' again. This snapshot is used to calculate the changes to your model when you scaffold the next migration. The Designer Code for this migration file includes a snapshot of your current Code First model. ![]() PM> Add-Migration 'Add PhoneNumber to User' Scaffolding migration 'Add PhoneNumber to User'. This is just a small addition to the model, and we want it added to a new migration so let’s create that right away: To start with an initial model (class) for our first migration, create the following class: I like to divide logical parts of my app into projects, so I also create a dedicated Model class library. Successfully added 'EntityFramework 5.0.0' to EFPlays.DataAccess. ![]() Adding 'EntityFramework 5.0.0' to EFPlays.DataAccess. Successfully installed 'EntityFramework 5.0.0'. If you do not accept the license agreement(s), then delete the relevant components from your device. Your use of the package and dependencies constitutes your acceptance of their license agreements. Check the package for additional dependencies, which may come with their own license agreement(s). You are downloading EntityFramework from Microsoft, the license agreement to which is available at. PM> Install-Package EntityFramework Installing 'EntityFramework 5.0.0'. I totally clean it, deleting the default Class1.cs file and then install the Entitiy Framework package, via the Package Manager Console: I always have a dedicated DataAccess project – just a plain old Class Library created with the default template within Visual Studio. How to setup a project with Entity Framework Migrationsįirst step, of course, is to setup a project to actually use Entity Framework Migrations. So I thought I’d compile a little “cheat sheet” with the basic commands that is necessary to use Entity Framework Migrations. You don’t have your database version controlled?Īnyway, I mostly do web development and once an application gets going it is minimal how much the database changes from release to release, and since I’m not getting any younger and my memory is not as good as it used to, I often forget some of the (limited) commands that I need to use to generate SQL scripts to run against the server. Magic Unicorn Edition), and in particular I am really beginning to like code first migrations, which makes it easy for you to not only migrate your database step by step, but as an extra bonus also get your database under version control. I’m a big fan of Entity Framework ( Code First, aka. ![]()
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