Linq-to-Entities Projection Queries: Here, you will learn how to write LINQ-to-Entities queries and get the result entities. Visit LINQ Tutorials to learn LINQ step by step. Projection is a process of selecting data in a different shape rather than a…

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

Disconnected Entities: Before we see how to perform CRUD operation on disconnected entity graph, let's see how to associate disconnected entity graph with the new context instance. There are two things we need to do when we get a disconnected entity…

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.…

Entity Framework Architecture The following figure shows the overall architecture of the Entity Framework. Let us now look at the components of the architecture individually: EDM (Entity Data Model): EDM consists of three main parts - Conceptual mode…

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…

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.…

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…