Should DbContext be injected?
This ensures that the correct options for the specific DbContext subtype are resolved from dependency injection, even when multiple DbContext subtypes are registered. Your DbContext does not need to be sealed, but sealing is best practice to do so for classes not designed to be inherited from.
What is EF DbContext?
The DbContext class is an integral part of Entity Framework. An instance of DbContext represents a session with the database which can be used to query and save instances of your entities to a database. DbContext is a combination of the Unit Of Work and Repository patterns.
What is FirstOrDefaultAsync?
FirstOrDefaultAsync(IQueryable, Expression>) Asynchronously returns the first element of a sequence that satisfies a specified condition or a default value if no such element is found.
What is DbContext stackoverflow?
DbContext generally represents a database connection and a set of tables. DbSet is used to represent a table. Your code sample doesn’t fit the expected pattern. First, it is incomplete. Also, there are properties that really don’t belong.
What is the difference between DbContext and DbSet?
Intuitively, a DbContext corresponds to your database (or a collection of tables and views in your database) whereas a DbSet corresponds to a table or view in your database.
What is DbContext in EF?
DbContext is an important class in Entity Framework API. It is a bridge between your domain or entity classes and the database. DbContext is the primary class that is responsible for interacting with the database.
Can DbContext be singleton?
First, DbContext is a lightweight object; it is designed to be used once per business transaction. Making your DbContext a Singleton and reusing it throughout the application can cause other problems, like concurrency and memory leak issues. And the DbContext class is not thread safe.