Model builder entity framework
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ModelBuilder.Entity().ToTable("EnrollmentInfo") In this chapter, we will continue with the simple example which contains Student, Course and Enrollment classes and one context class with M圜ontext name as shown in the following code. Fluent API supports the following types of mappings.
#Model builder entity framework code
The Code First Fluent API is most commonly accessed by overriding the OnModelCreating method on your derived DbContext.įluent API provides more functionality for configuration than DataAnnotations. Data annotations and the fluent API can be used together, but Code First gives precedence to Fluent API > data annotations > default conventions.įluent API is another way to configure your domain classes. This method does not register types as part of the model.Fluent API is an advanced way of specifying model configuration that covers everything that data annotations can do in addition to some more advanced configuration not possible with data annotations. In the model that inherit from or implement the type specified by the generic argument. Returns a string that represents the current object.īegins configuration of a lightweight convention that applies to all entities and complex types inīegins configuration of a lightweight convention that applies to all entities and complex types Registers an entity type as part of the model. Properties of the specified type in the model. This is used to remove types from the model that were addedīegins configuration of a lightweight convention that applies to all propertiesīegins configuration of a lightweight convention that applies to all primitive This is used to remove types from the model that were addedīy convention during initial model discovery.Įxcludes a type from the model.
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This default database schema name is usedįor database objects that do not have an explicitly configured schema name.Įxcludes the specified type(s) from the model. This method can be called multiple times for the same entity toĭetermines whether the specified object is equal to the current object.Ĭonfigures the default database schema name. Registers an entity type as part of the model and returns an object that can be used toĬonfigure the entity. This method can be called multiple times for the same type to Registers a type as a complex type in the model and returns an object that can be used toĬonfigure the complex type. Provider information must be specified because this affects the database layer of the generated model.įor SqlClient the invariant name is '' and the manifest token is the version year (i.e. The connection is used to determine the database provider being used as thisĪffects the database layer of the generated model. Provides access to the settings of this DbModelBuilder that deal with conventions.Ĭreates a DbModel based on the configuration performed using this builder. The registrar allows derived entity and complex type configurations to be registered with this builder. Gets the ConfigurationRegistrar for this DbModelBuilder.
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Initializes a new instance of the DbModelBuilder class that will useĪ specific set of conventions to discover the initial model. In the most recent version of the Entity Framework installed on your machine. The process of discovering the initial model will use the set of conventions included Initializes a new instance of the DbModelBuilder class. Configuration done via the DbModelBuilder API takes precedence over data annotations which in turn take precedence over the default conventions. Finally any configuration that was performed using the DbModelBuilder API is applied. These conventions will automatically discover aspects of the model, such as primary keys, and will also process any data annotations that were specified on your classes. When the Build method is called a set of conventions are run to discover the initial model. Types that form your model are registered with DbModelBuilder and optional configuration can be performed by applying data annotations to your classes and/or using the fluent style DbModelBuilder API. The recommended approach, however, is to use OnModelCreating in DbContext as the workflow is more intuitive and takes care of common tasks, such as caching the created model. You can also use DbModelBuilder independently of DbContext to build a model and then construct a DbContext or ObjectContext. DbModelBuilder is typically used to configure a model by overriding DbContext.OnModelCreating(DbModelBuilder).