entity framework insert

Implementation inheritance of MVC5 Entity Framework Learning You have learned how to handle concurrency exceptions. In this section, you will learn how to implement inheritance. In object-oriented programming, you can use inheritance to reuse code. Next, you will modify the Instructor and Student classes so that they can be derived from the Person base class. This base class contains the attributes common t

Learning the Entity Framework technology during the review of excellent articles, for the sake of convenient access later, reproduced to the blog, can read the original: http://blog.csdn.net/bitfan/article/details/12887007The purpose of this article is to make an overall impression of the technology and understand its rationale before delving into the technology.I. Understanding the EF data ModelEF is essen

Tags: ORM Entity Framework Database FirstAs we all know, since the 4.x version, the Entity framework began to support the database first, model three generation mode, in the previous blog, we learned about the code There is also a pattern called codeonly, which, in comparison, is a more advanced technology, and we just

This article is a series of ASP. NET 4.0 and entity framework 4ArticleThe first article, this series will show you how to use entity framewok4 to Develop ASP. NETProgram. The article will teach you how to use entity framewok4 to create a database step by step. The created database will be used in later articles. Summ

In the last diary, we discussed in detail how Entity Framework code first establishes a one-to-many relationship between tables. In this diary, we will introduce in detail the default behavior of the Entity Framework code first to establish many-to-many relationships, and how to change the default behavior through the

http://www.cnblogs.com/kenshincui/p/3280742.html#autoid-0-0-0 Overview When developing data-oriented software, we often make the effort to solve business problem entities, relationships, and logical building models, and the creation of ORM provides us with an elegant solution. The Ado.net Entity Framework is a ado.net-driven ORM framework in. NET development t

Both LINQ to SQL and the Entity Framework are object-relational mapping techniques that contain LINQ functionality. The essential difference between them is that EF does a better job of decoupling the database schema from the type of our query. With EF, the object we're querying is no longer a C # class that exactly corresponds to the database schema, but rather a higher-level abstraction: the

Entity Framework with NOLOCK, entitynolock Reference page: Http://www.yuanjiaocheng.net/Entity/jieshao.html Http://www.yuanjiaocheng.net/entity/tixijiegou.html Http://www.yuanjiaocheng.net/entity/setenvrionment.html Http://www.yuanjiaocheng.net/

Original Name: Entity Framework 4.1: BASICS (1) original address: http://vincentlauzon.wordpress.com/2011/04/03/entity-framework-4-1-basics-1/ We can see the English tutorial recommended for Entity Framework 4.1. To help you look

Original article name: Entity Framework 4.1: complex types (4) Address: http://vincentlauzon.wordpress.com/2011/04/13/entity-framework-4-1-complex-types-4/ We can see the English tutorial recommended for Entity Framework 4.1. To

I. Preface Browsing the ADO. Net blog found that Entity Framework has made significant progress over the past few years, especially in the past one or two years. Ef4.1 introduces support for the new dbcontext API and code first. EF 4.3, released earlier this year, provides support for code first migration, which allows developers to easily optimizeCodeTo improve the database architecture. EF5 is now releas

ADO. NET Entity Framework is an entity framework introduced by. NET Framework 3.5 SP1. It allows developers to focus on data through the Object Model (rather than the logical/Relational Data Model. The Entity

Original article name: Entity Framework 4.1: failed to define relationships (5) Address: http://vincentlauzon.wordpress.com/2011/04/15/entity-framework-4-1-many-to-many-relationships-5/ We can see the English tutorial recommended for Entity

both LINQ to SQL and the Entity Framework are object-relational mapping techniques that contain LINQ functionality. The essential difference between them is that EF does a better job of decoupling the database schema from the type of our query. With EF, the object we're querying is no longer a C # class that exactly corresponds to the database schema, but rather a higher-level abstraction: the

Using tools to track the SQL generated by EFWhen using an ORM framework such as the Entity Framework, SQL is transparent to the user, and often many people do not care about the SQL generated by the ORM, but when the system has performance problems, it must focus on the generated SQL to find the problem.Friends who have used TopLink know very much as long as you

var m = new your model ();Db. Your Model.add (m);Db. SaveChange ();Response.Write (m.id); Perform. SaveChange () The ID value can be obtained directly after saving.There is no ID value before saving.When the Entity Framework inserts data into a database, if the primary key field is an auto-increment identity column, the self-increment is returned to the property corresponding to the

This article describes how to call a stored procedure to perform crud operations on data in the SQL Server database. The database used in this article is still the first article in this series, "using model-first ".The web page used is created in the second article "using Entity Framework for crud operations, you can click [Code] to download the link to download the project file. Use vs2010 to open it.Step

Transferred from Andrew's blog to the Entity Framework-query across Context Http://columns.chicken-house.net/post/e99ba3e6909ee79a84-Entity-Framework-e8b7a8e8b68a-Context-e79a84e69fa5e8a9a2.aspx First of all, I would like to express my gratitude to the author. below is the text, and I hope he can help you.

statements and sends them to the database. Change Tracking: It keeps track of changes, and it queries from the database once the entity object has changed. Persisting Data: It can also insert, UPDATE, and delete operations on the database based on the entity state. Caching: DbContext defaults to a first-level cache, which stores the

Entity Framework 6 Recipes 2nd Edition (11-1), entityrecipes The11ChapterFunction Functions provide a powerful code reuse mechanism, and keep your code concise and easy to understand. They are also the database-Layer Code that EF can use when running. Functions include Rowset Functions, Aggregate Functions, Ranking Functions, and scalar Functions. The function is either determined or uncertain. When a funct