You can run add-migration to create the migrations, but you won’t be able to run update-database as the tables already exist. You have to delete the model and recreate it again What if Model changes
The EF Core does not support updating the Model if the database changes. Copilot Packages Security Code review Issues Discussions Integrations GitHub Sponsors Customer stories Team Enterprise Explore Explore GitHub Learn and contribute Topics Collections Trending Skills GitHub Sponsors Open source guides Connect with others The ReadME Project Events Community forum GitHub.
Run the following command to generate the model. Here the -Connection & -Provider are required. Use table and column names directly from the database. Use attributes to configure the model (where possible). The schemas of tables to generate entity types for. Paths are relative to the project directory. Parameters of the Scaffold-DbContext Argument We need to pass the connection string & database provider to this command. The Scaffold-DbContext is the command is used to generate the model from the database.
You can also download the adventureworks database from and use it. We will use the EFCoreMigration database, which we created in the previous tutorial.
Goto to the solution directory and run the following command to install To Tools to work correctly you need to install the package. You can download the SDK from the link Previous Versions NET Core SDK version 2.1.300 or newer you do not have to do anything.
If you are not using windows OS, then using the command line tools is the only option available to you. The Command line tools run from the command line does not require the Visual Studio. In ASP.NET Core 2.1 and above, these packages are automatically included by the Visual Studio 2017, when creating the project. This package actually contains the command to scaffold an existing database by reverse-engineering the schema of a database. Installing the above package also installs the package. We use these tools inside the Visual Studio NuGet Package manager console.
You will work with the new database only if you are working with a new project.
Also, learn how to use ef core migrations to create & update the database. I am also moving from sql server 2016 to sql server 2022ĭatabase provider: can refer to the tutorial on how to create a simple Entity framework core console application. The problem occurs after i updated visual studio 2022 from preview to current version. I specify that all the old and new project generates the same error. I don't understand what is happening because I installed everything as you can see in the image above Ensure the name is correct and it's referenced by the project. Initial Catalog=DiceDatatable " -output-dir Models Here is the exact command I entered dotnet ef dbcontext scaffold "Data Source=. I am trying to generate my models from the database using Entity framework via reverse engineering.