If you use EF Core, code first for SQLite is supported. Has anyone managed to get Code First working with EF6 yet? Would appreciate help/guidance on this as I'm now completely stuck!!! If I delete the database, EF creates it but doesn't create the table and the program fails when it attempts to read back the data with an error message that the table does not exist. If I create the table manually the program works fine and the table is updated. Protected override void OnModelCreating(DbModelBuilder modelBuilder) default constructor should do this automatically but fails in this case Now the problem is that the tables are not being created although the database is.ĭb.Notes.Add(new Note ", note.NoteId, note.Text) I finally got the app.config file to work after some useful posts on Stackoverflow. This means that the corresponding DbSet property must be implemented using a Set call.Using latest versions of EF6 and SQLite from NuGet. These entity types need to be configured with a unique name, which must be supplied whenever the shared-type entity type is used, in addition to the CLR type. TableBuilder => tableBuilder.HasComment("Blogs managed on the website")) Įntity types that use the same CLR type are known as shared-type entity types. Now, the entity BlogWithMultiplePosts can be mapped to this function in a following way: modelBuilder.Entity().HasNoKey().ToFunction("BlogsWithMultiplePosts") SELECT b.Url, COUNT(p.BlogId) AS PostCount Next, create the following table-valued function in the database, which returns only blogs with multiple posts as well as the number of posts associated with each of these blogs: CREATE FUNCTION dbo.BlogsWithMultiplePosts() In the example, the entity is keyless, but it doesn't have to be. To illustrate this, let's define another entity that represents blog with multiple posts. It's possible to map an entity type to a table-valued function (TVF) instead of a table in the database. See the in-memory provider docs for more information. To test keyless entity types mapped to views using the in-memory provider, map them to a query via ToInMemoryQuery. You can manually configure the table name: If no DbSet exists for the given entity, the class name is used. Table nameīy convention, each entity type will be set up to map to a database table with the same name as the DbSet property that exposes the entity. The next migration will now contain any changes made to the table. If you need to start managing the table using migrations again then a new migration should be created where AspNetUsers is not excluded. With this configuration migrations will not create the AspNetUsers table, but IdentityUser is still included in the model and can be used normally. ToTable("AspNetUsers", t => t.ExcludeFromMigrations()) protected override void OnModelCreating(ModelBuilder modelBuilder) This is especially true when using bounded contexts, for which it is common to have a different DbContext type for each bounded context. It is sometimes useful to have the same entity type mapped in multiple DbContext types. If you don't want a type to be included in the model, you can exclude it: Protected override void OnModelCreating(ModelBuilder modelBuilder) AuditEntry because it is specified in OnModelCreating.Post is included because it's discovered via the Blog.Posts navigation property.Blog is included because it's exposed in a DbSet property on the context.In the code sample below, all types are included: Entity types that are specified in the OnModelCreating method are also included, as are any types that are found by recursively exploring the navigation properties of other discovered entity types. Including types in the modelīy convention, types that are exposed in DbSet properties on your context are included in the model as entities. EF Core can read and write entity instances from/to the database, and if you're using a relational database, EF Core can create tables for your entities via migrations. Including a DbSet of a type on your context means that it is included in EF Core's model we usually refer to such a type as an entity.
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