microsoft entity framework tutorial

objects and Mapping information on how Domain OB Jects map to relational database objects (tables, views StoredProcedures). ORM allows us to keep the database design separate from our domain class design. This makes the application maintainable and extendable. It also automates standard CRUD operation (Create, Read, Update Delete) so that the developer doesn ' t need to write it manually.A Typical ORM tool generates classes for the database interaction for your application as shown below.Visi

Entity Framework tutorial -- What is Entity Framework, frameworkentity What is Entity Framework? Writing and managing ADO. NET is a tedious and boring task.

. Second, you just want to focus on designing a specific domain class before you use these classes to build the database. Thirdly, you want to design your database model from the designer provided by Visual Studio, and then build the database and the corresponding classes from that model.The above three cases are illustrated by examples.1.EF helps you build classes from existing databases so that you can work with the instances generated by this class and with ADO.2. You can focus on your busine

Entity Framework tutorial -- install Entity Framework environment, entityframework Install the Entity Framework Environment Entity

the database and to return it back. Object Service is responsible for materialization, which are the process of converting data returned from an entity client Data provider (next layer) to an entity object structure.Entity Client Data Provider: The main responsibility of this layer are to convert L2E or Entity SQL queries into a SQL query which are understood by

Installing the Entity Framework EnvironmentThe Entity Framework 5.0 API is distributed in two locations, one can be found in the NuGet Package Manager, and one exists in the. NET Framework. NET Framework 4.0/4.5 contains the EF co

Microsoft announced a significant improvement in the performance of Entity Framework 5 Posting by itwriter published on comment (7) 1542 people read the original article link [favorites]» According to the introduction on the blog of the ADO. Net team, EF applications of this version are used.ProgramThe performance improvement is partly due to the automatic co

Tags: style blog http color os file data ioRecently trying to learn ASP. NET MVC, when you click Add-New Item--visual in the data under C # to the ADO Entity Data Model, and the "Select Your data connection" error occurs, the " An error occurred in Microsoft SQL Server Compact 3.5. Please contact the provider vendor to resolve this issue. "and write it down here in case you forget." Online check, said to r

Validate EntityYou can write the custom server side validation for any entity. To accomplish this, override validateentity method of DBContext as shown below.protected OverrideSystem.Data.Entity.Validation.DbEntityValidationResult validateentity (Dbentityentry entityentry, system.collections.generic.idictionaryObject,Object>items) { if(entityentry.entity isStudent) { if(entityentry.currentvalues.getvaluestring> ("Studentname") =="") {

I recently re-learned Entity Framework. I saw a good learning tutorial. I will repost it here. The tutorial is as follows. Abstract: I recently studied Microsoft's ef. After studying this time, I feel that this EF is not perfect yet. It is a semi-finished product. However, it is said that in. net4.0,

5. Filter overrides You can get Themore details from Microsoft msdnhttp://www.asp.net/visual-studio/ OVERVIEW/2013/RELEASE-NOTES#TOC10 Layout support: Supports only Master Page in MVC2. Supports notonlymaster page but also Layout page in MVC 3 and MVC4. Validation: Client-side Validation and asynchronous controllers are there in MVC2. Unobtrusive Ajax and Client side Validation, Jquery Validation and JSON binding support are in MVC3.

ASP. NET MVC5 + EF6 getting started tutorial (5) Model and Entity Framework, mvc5ef6 Source: Slark. NET-blog Park http://www.cnblogs.com/slark/p/mvc-5-ef-6-get-started-model.html Previous section: ASP. net mvc 5 getting started tutorial (4) View and ViewBag Next section: ASP. NET MVC5 + EF6 getting started

Original: ASP. MVC5 + EF6 Introductory Tutorial (5) Model and entity FrameworkArticle Source: slark.net-Blog Park http://www.cnblogs.com/slark/p/mvc-5-ef-6-get-started-model.htmlPrevious section: ASP. NET MVC 5 Getting Started Tutorial (4) View and ViewBagNext section: ASP. MVC5 + EF6 Tutorial (6) View Razor useSOURCE

Entity Framework FoundationThis textbook will teach you how to use the Entity Framework, and we will use Entity Framework 6.0 and Visual Studio 2012.The following table is a major version of the

create a new diagram and move Teacher and Course entities to a new diagram as shown below:So, in the this-is-a-can create a new diagram from an existing diagram.You can also include the related entities of a particular entity. For example, right click on Student entity→select ' Include related '. Standard and Course entities would also be included, because Student have their reference property:This would i

Entity Framework tutorial -- create an object data model, entityframework Create an object data model: This article will show you how to create an EDM SchoolDB database and understand the infrastructure module. The Entity Data Model (EDM) is a model used to describe the relationship between entities. The following uses

Entity Framework tutorial -- DBContext, entitydbcontext DBContext: In the previous section "create an object data model", EDM creates a SchoolDBEntities class for us.System. Data. Entity. DbContextThis class. This DbContext is called the context class in EF. Before EF4.1, the context class generated by EDM is derived

would throw an exception because it must match column names:using (varnew schooldbentities ()) { //This wouldthrow an exception var studentname = ctx. Students.sqlquery ("from where studentname='New Student1' "). ToList ();}SQL query for non-entity types:A SQL Query Returning instances of any type, including primitive types, can is created using the SQLQuery method on the database class. For example: usin