Can I have more than one DbContext?
Multiple DbContext was first introduced in Entity Framework 6.0. Multiple context classes may belong to a single database or two different databases.
How do I get rid of migration?
Removing and Resetting Migrations
- Remove the _MigrationHistory table from the Database.
- Remove the individual migration files in your project’s Migrations folder.
- Enable-Migrations in Package Manager Console.
- Add-migration Initial in PMC.
- Comment out the code inside of the Up method in the Initial Migration.
What is ADD migration?
Add-Migration: Creates a new migration class as per specified name with the Up() and Down() methods. Update-Database: Executes the last migration file created by the Add-Migration command and applies changes to the database schema.
What is the advantage of Entity Framework over ADO Net?
Entity Framework applications provide the following benefits: Applications can work in terms of a more application-centric conceptual model, including types with inheritance, complex members, and relationships. Applications are freed from hard-coded dependencies on a particular data engine or storage schema.
What is the difference between ObjectContext and DbContext?
DbContext is nothing but a ObjectContext wrapper, we can say it is a lightweight alternative to the ObjectContext….ObjectContext VS DBContext.
ObjectContext | DbContext |
---|---|
ObjectContext can be used by Entity Framework 4.0 and below. | DBContext can be used by Entity Framework 4.1 and above. |
How do I stop lazy loading?
To turn off lazy loading for a particular property, do not make it virtual. To turn off lazy loading for all entities in the context, set its configuration property to false….Rules for lazy loading:
- context. Configuration.
- context. Configuration.
- Navigation property should be defined as public, virtual.
What is ADD-migration initial?
PM> Add-Migration Initial Scaffolding migration ‘Initial’. The Designer Code for this migration file includes a snapshot of your current Code First model. This snapshot is used to calculate the changes to your model when you scaffold the next migration.
What is ADD-migration?