#Iconsole application code

You can also verify it by changing the content of Program.cs as follows: using static System.

You can verify this by querying the Books table using your preferred database management tool:

#Iconsole application code

This will cause the code in the console application's Main method to execute, and the author and all books will be added to the database. Using (var context = new EFCoreDemoContext())Įxecute the following command from the command line: dotnet run Open the Program.cs file and replace the existing content with the following: using You don’t need to queue for a private trainer to train with you or wait for an available spot in the gym We transform the smart. Here's how the modified Author table should look: AI algorithm is bringing new opportunities to many industries, whether it is self-driving or unmanned stores, the new era of industrial innovation has arrived This opportunity also occurs in the fitness industry. Once the migration has been applied, the database schema will be altered. In this case, there is no data to be lost so the warning can be ignored. You should also get a warning that the scaffolded migration could lead to data loss. This will scaffold a migration that will alter the size of the Book's Title field and the Author's FirstName and LastName fields. In the Terminal, type the following command: dotnet ef migrations add LimitStrings Guides in this section are focused on using the Data Server as a console application. Next, add a new file named Author.cs and add the following code to it: using Installing the Data Server as a console application. If you don't place your context class in a namespace and you are working with EF Core versions prior to 2.1, you may come up against this bug - now fixed in 2.1 when adding your migration. Protected override void OnConfiguring(DbContextOptionsBuilder The model, particularly the DbContext class, is declared inside a namespace. Public class EFCoreDemoContext : DbContext This results in a minimal console application:Īdd a new file named EFCoreDemoContext.cs and add the following code to it: using Microsoft.EntityFrameworkCore This should result in the initial help for the EF tools being displayed:įinally build and run the application with the single command: > dotnet run This may not have been added automatically: įinally, run the following command to restore the packages and then test to see that the ef commands are available to the project: > dotnet restore csproj file to include the following additional is added to the project. adds the Entity FrameworkCore and EF Core tooling packages from Nuget to the project.Press Ctrl + ' to open a new Terminal window and then type the following commands: > dotnet new console You can use the Terminal that's integrated into Visual Studio Code for this.Ĭreate a folder named EFCoreDemo and then open it in Visual Studio Code. Alternatively, you can use a command line tool to create and build the project. Net Core (2017 or greater), you can use the project templates to create a new. If you have a version of Visual Studio that supports. Visual Studio Code will be used in this example. Net Core SDK installed and that you have a suitable development environment/text editor.

This walkthrough demonstrates the minimum required to create a database using Entity Framework Core in a.

Database First And Entity Framework Core.

Many To Many Relationship Configuration.