The class is derived from the class is called a context class in the entity framework. For example, the context class name for EF_Demo_DB is EF_Demo_DBEntities and is derived from the DBContext class as shown below. The default context class name is Entities. In our case the context class file name is StudentDataModel. The context class resides in the .Context.cs file. You can see the context class file by expanding StudentDataModel. This is the T4 template and this T4 template file generates a context class (in this case the context class file name is ), and whenever we change the Entity Data Model (.edmx file), then again the T4 template is also going to update the context class. In our example, it will be and inside this you will find the context class as shown in the below image. EDMX file in the solution explorer and open. Every Entity Data Model (EDM) generates one context class for the database. Whenever we use Entity Framework Database First Approach to interact with an existing database, then the EDM (Entity Data Model) creates the context class which is inherited from the class. So, in simple words, we can say that the DbContext instance is the primary class that is responsible for interacting with the database and performing the database CRUD Operations. Entity Framework DbContext Class:Īccording to MSDN, a DbContext instance represents a combination of the Unit Of Work and Repository Patterns such that it can be used to query from a database and group together changes that will then be written back to the store as a unit. Please read our introduction to Entity Framework Database Firstarticle before proceeding to this article. We are going to work with the same example that we created in our Introduction to Entity Framework Database First Approach article. At the end of this article, you will understand the need and use of the Entity Framework DbContext class in detail. Please read our previous article where we discussed Model Browser in Entity Framework. In this article, I am going to discuss DbContext Class in Entity Framework Database First Approach in detail with Examples. īack to: Entity Framework Tutorials For Begineers and Professionals DbContext Class in Entity Framework Database First Approach.Code-Based Migration in Entity Framework Code First.Automated Database Migration in Entity Framework Code-First.Seed Data in Entity Framework Code-First.Cascade Delete in Entity Framework Code First Approach.Stored Procedures in Entity Framework Code-First.Existing Database using Entity Framework Code First Approach.Many-to-Many Relationships in Entity Framework Fluent API.One-to-Many Relationships in Entity Framework Fluent API.One-to-One Relationships in Entity Framework Fluent API.Property Configurations using Entity Framework Fluent API. Entity Configurations using Entity Framework Fluent API.Fluent API Configurations in Entity Framework.Concurrenc圜heck Attribute in Entity Framework.TimeStamp Attribute in Entity Framework.DatabaseGenerated Attribute in Entity Framework.StringLength Attribute in Entity Framework.MaxLength and MinLength Attribute in Entity Framework.NotMapped Attribute in Entity Framework.InverseProperty Attribute in Entity Framework.ForeignKey Attribute in Entity Framework.Data Annotation Attributes in Entity Framework.Configure Domain Classes in Entity Framework.Database Initialization Strategies in Entity Framework Code-First.Database Initialization in Entity Framework Code First.Default Code-First Conventions in Entity Framework. Logging Database Commands in Entity Framework.DbEntityEntry Class in Entity Framework.Bulk Insert, Update and Delete in Entity Framework.Asynchronous Programming with Entity Framework.Saving Disconnected Entity in Entity Framework.Disconnected Entities in Entity Framework.Lazy Loading vs Eager Loading in Entity Framework.
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