Execute Native SQL Query You can execute native raw SQL query against the database using DBContext. You can execute the following types of queries: SQL query for entity types which returns particular types of entities SQL query for non-entity types w…

Querying with EDM: We have created EDM, DbContext, and entity classes in the previous sections. Here, you will learn the different types of queries an entity framework supports, which is in turn converted into SQL query for the underlaying database.…

以下系列文章为Entity Framework Turial Basics系列 http://www.entityframeworktutorial.net/EntityFramework5/entity-framework5-introduction.aspx ----------------------------------------------------------------------------------------------------------------------…

Download Sample Project: Download sample project for basic Entity Framework tutorials. Sample project includes SchoolDB.mdf for SQL Server 2012. It also includes SchoolDB.sql script if you are using a different version of SQL Server.…

DBSet Class DBSet class represents an entity set that is used for create, read, update, and delete operations. A generic version of DBSet (DbSet<TEntity>) can be used when the type of entity is not known at build time. You can get the reference of D…

Setup Entity Framework Environment: Entity Framework 5.0 API was distributed in two places, in NuGet package and in .NET framework. The .NET framework 4.0/4.5 included EF core API, whereas EntityFramework.dll via NuGet package included EF 5.0 specifi…

Colored Entity in Entity Framework 5.0 You can change the color of an entity in the designer so that it would be easy to see related groups of entities in the designer from Visual Studio 2012 onwards. To change the color of an entity, select entity i…

Multiple Diagrams in Entity Framework 5.0 Visual Studio 2012 provides a facility to split the design time visual representation of the Entity Data Model. This means that you can have multiple diagrams for one Entity Data Model. You can create a new d…

Lazy Loading: One of the important functions of Entity Framework is lazy loading. Lazy loading means delaying the loading of related data, until you specifically request for it. For example, Student class contains StudentAddress as a complex property…

Eager Loading: Eager loading is the process whereby a query for one type of entity also loads related entities as part of the query. Eager loading is achieved using the Include() method. In the following example, it gets all the students from the dat…