This can be useful for text searches involving non-string columns. This feature was contributed by to ToString are now translated to SQL when using the SQLite database provider. Entity types must be added to the model before the attribute will be discovered on that entity type. NOTE EntityTypeConfigurationAttribute types will not be automatically discovered in an assembly. Or by registering it in OnModelCreating: protected override void OnModelCreating( ModelBuilder modelBuilder) For example, by creating a DbSet property for the entity type: public class BooksContext : DbContext The entity type is included in a model using one of the normal mechanisms. This attribute means that EF Core will use the specified IEntityTypeConfiguration implementation whenever the Book entity type is included in a model. Starting with EF Core 6.0, an EntityTypeConfigurationAttribute can be placed on the entity type such that EF Core can find and use appropriate configuration. New BookConfiguration().Configure(modelBuilder.Entity()) For example: protected override void OnModelCreating( ModelBuilder modelBuilder) Normally, this configuration class must be instantiated and called into from OnModelCreating. Public void Configure(EntityTypeBuilder builder) For example: public class BookConfiguration : IEntityTypeConfiguration This feature was contributed by instances allow ModelBuilder configuration for a each entity type to be contained in its own configuration class. For example, on SQL Server: CREATE TABLE ( For example, consider a Product entity type with a decimal Price property: public class ProductĮF Core will map this property to a database column with precision 10 and scale 2. This feature was contributed by precision and scale of a database column can now be configured using mapping attributes without specifying the database type directly. UnicodeAttribute is ignored when the database system supports only Unicode types. For example, when using SQL Server, this results in a database column of varchar(22): CREATE TABLE (ĬONSTRAINT PRIMARY KEY ()) ĮF Core maps string properties to Unicode columns by default. In addition, MaxLength is used to limit the size of the database column. Since ISBNs cannot contain any non-unicode characters, the Unicode attribute will cause a non-Unicode string type to be used. For example, consider a Book entity type with a property for the International Standard Book Number (ISBN) in the form “ISBN 978-3-16-148410-0”: public class Book This feature was contributed by with EF Core 6.0, a string property can now be mapped to a non-Unicode column using a mapping attribute without specifying the database type directly. You can run and debug into all the preview 1 samples shown below by downloading the sample code from GitHub. This preview also includes several bug fixes. Some of the highlights from preview 1 are called out below. We maintain documentation covering new features introduced into each preview. It’s possible to use this new version of the EF Core CLI with projects that use older versions of the EF Core runtime. Then install with: dotnet tool install -global dotnet-ef -version 6. To install the preview tool globally, first uninstall any existing version with: dotnet tool uninstall -global dotnet-ef You’ll have to install this package as either a global or local tool. Before you can execute EF Core migration or scaffolding commands, Installing the EF Core Command Line Interface (CLI)Īs with EF Core 3.0 and 3.1, the EF Core CLI is no longer included in the. We also published the 6.0 preview 1 release of the provider for ADO.NET. Shared EF Core components for relational database providers ĭecoupled EF Core abstractions use this for features like extended data annotations defined by EF Core Shared design-time components for EF Core tools ĮF Core PowerShell commands for the Visual Studio Package Manager Console use this to integrate tools like scaffolding and migrations with Visual Studio ĭatabase provider for SQLite without a packaged native binary ĭatabase provider for SQLite that includes the native binary for the database engine The main EF Core package that is independent of specific database providersĭatabase provider for Microsoft SQL Server and SQL Azure This following table links to the preview 1 versions of the EF Core packages and describes what they are used for. NET Framework.ĮF Core is distributed exclusively as a set of NuGet packages.įor example, to add the SQL Server provider to your project, you can use the following command using the dotnet tool: dotnet add package Microsoft. NET Standard version for more information see the future of. This release includes new attributes, built-in functions, and database-specific improvements to SQLite and SQL Server capabilities. Today, the Entity Framework Core team announces the first preview release of
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