![]() Add all three components to declarations:.: IMustHaveTenant if you're doing multi-tenancy.: ISoftDelete if you're not doing auditing and want soft-deletes.: IFullAudited if you want a history of who created, deleted, and last edited and when.These were the entities I used in the video, and on my ABP Demo Site, and I feel they read better than or. When you see "LeesStore", substitute your project name. When you see "Category" substitute a foreign table. Quick note: For readability when you see "Product" substitute your entity name. I expect it will save me time and effort and reduce the unnecessary rework that comes with missing a step. To use this reference I imagine you'd want to skim over it like a checklist each time you add a new entity to ensure you didn't forget anything. They may seem complicated compared to adding an entity to a SharePoint or Power Apps app, but remember the end product is infinitely customizable, and when something goes wrong you can almost always code your way out of it. ![]() Here are 15 steps broken down by server-side and client-side. Note: Once you have created the model, you must use the Migration commands whenever you change the model to keep the database up to date with the model.While the process of making Create, Read, Update, and Delete (CRUD) pages in ASP.Net Boilerplate is well documented on their website, and while I did a detailed walk through in my video E19: Be a Hero on Day 1 with ASP.Net Boilerplate (particularly the demo starting at 40:59), I feel the community could use a high level, quick, reference guide for starting the CRUD process from scratch with a new entity: an ABP CRUD Cheat Sheet. Thus, you can create EF Core model for an existing database. > dotnet ef dbcontext scaffold "Server=.\SQLEXPRESS Database=SchoolDB Trusted_Connection=True " -o Models If you use dotnet command line interface to execute EF Core commands then open command prompt and navigate to the root folder and execute the following dotnet ef dbcontext scaffold command: Note: EF Core creates entity classes only for tables and not for StoredProcedures or Views. HasConstraintName( "FK_Teacher_Standard") HasConstraintName( "FK_StudentCourse_Student") Įntity.Property(e => e.StandardId).HasDefaultValueSql( "((0))") HasConstraintName( "FK_StudentCourse_Course") The following is the generated Student entity class for the Student table. The above Scaffold-DbContext command creates entity classes for each table in the SchoolDB database and context class (by deriving DbContext) with Fluent API configurations for all the entities in the Models folder. ![]() PM> get-help scaffold-dbcontext –detailed Use the following command to get the detailed help on Scaffold-DbContext command: The -OutputDir parameter specifies the directory where we want to generate all the classes which is the Models folder in this case. We use provider for the SQL Server, so it is. The second parameter is the provider name. It will use Windows credentials to connect to the SQL Server. Trusted_Connection=True specifies the Windows authentication. Here, Server=.\SQLExpress refers to local SQLEXPRESS database server.ĭatabase=SchoolDB specifies the database name "SchoolDB" for which we are going to create classes. In the above command, the first parameter is a connection string which includes three parts: DB Server, database name and security info. In Visual Studio, select menu Tools -> NuGet Package Manger -> Package Manger Console and run the following command: PM> Scaffold-DbContext "Server=.\SQLExpress Database=SchoolDB Trusted_Connection=True " -OutputDir Models The following parameters can be specified with Scaffold-DbContext in Package Manager Console: Use Scaffold-DbContext to create a model based on your existing database. Let's create entity and context classes for the following SchoolDB database in the local MS SQL Server shown below. This reverse engineering command creates entity and context classes (by deriving DbContext) based on the schema of the existing database. So, we need to do reverse engineering using the Scaffold-DbContext command. Creating entity & context classes for an existing database is called Database-First approach.ĮF Core does not support visual designer for DB model and wizard to create the entity and context classes similar to EF 6. ![]() Here you will learn how to create the context and entity classes for an existing database in Entity Framework Core. Next Creating a Model for an Existing Database in Entity Framework Core
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