entity framework book

In which scenarios does ADO. NET Entity Framework work ?, Ado. netentity After zhihu answered the question, he turned back. Enity Framework is already the main ORM in. NET. From the beginning of a Mapping concept, ORM has been sublimated to a certain extent, especially EF and other improvements to the object-oriented capabilities of the ORM

In the system architecture design, cache is the most common strategy to reduce database load and improve performance. The main purpose of cache is to reduce the numberReadOperation. But in different cases, we need to use different forms of cache. For example, if the data in the data table is static and does not change, it is very easy. We only need to load the data to the memory when the system starts, you can read data from the memory each time. For another example, the data in the data tab

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

Entity Framework 6.1-code FirstCode first-codes First, creating a good domain model. Under...2014-04-21 14:56 Reading (6858) Comments (0) Entity Framework 6.1 Learning Series overview, installationEntity Framework: Solid frame, look at the name to know is MSDN on this ...20

}). firstordefault (); If (Result ! = Null ){Console. writeline (result. Name );}Console. readkey ();} The final generated SQL script is: Select Top ( 1 ) [ Extent1 ] . [ ID ] As [ ID ] , [ Extent1 ] . [ Name ] As [ Name ] From [ DBO ] . [ User ] As [ Extent1 ] Where (N ' Flydragon3 ' = [ Extent1 ] . [ Code ] ) And (N ' Haha3 ' = [ Extent1 ] . [ Password ] ) WriteArticleTime-consum

object is created and associated with the context. Compile it first. Viii. Deleting an existing database The program is not running, so the database is not generated yet. First delete the original, brand-new, how the original should have. It's really clean. Nine, run the list page The empty X. Adding records 11. View the Database I just didn't use it because I couldn't even. 12. Model Changes 1,enable-migrations 2. Modifying entity object

650) this.width=650; "src="/img/fz.gif "alt=" Copy Code "style=" border:0px; "/>Publicstaticvoidtransaction () {myitentitiesentity= null;dbtransactiontran=null;try {entity=newmyitentities (); entity . Connection.Open (); tran=entity. Connection.begintransaction (); studentst=entity. Student.firstordefault (c=>c.student

Entity Framework 4.1: Multi-to-many relationship, entityframework 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-

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 tutorial (6) Use Razor in View Download source code: Click here to download1. Create a Model The Model

1. Using Entity Framework to delete data is a headache. to delete a small amount of data, use the following methods: Using (db. entity. studentdbentities context = New DB. entity. studentdbentities ()) { Foreach (VAR item in context. Students. Where (ROW => row. isleft = true )) { Context. deleteobject (item );

Today, I visited the blog of the ADO. NET Entity Framework Team. I am interested in this project because I also write Orm. :) Of course, that grade is not a level. I don't know how many pigeons I put in this project. I still remember the objectspace stuff. Now it's in beta 3, and I 've even published it in LINQ. He can't keep it up. (Winfs in Vista, I guess it's the same thing, so winfs has to put it .) W

ASP. NET MVC4 Entity Framework 6.0 IIS deployment error solution, ASP. NETMVC4 Recently, when I learned about MVC4, I made a simple small project and used Entity Framework as the Model. It was okay when F5 started debugging and running, but an error was reported when it was accessed after being published to IIS. The e

MySQL only supports default values and Automatic updates for timestamp that cannot be used for rowversion. Therefore, you can only set row Version in the app in MySQL. Non-existent disadvantages: 1.ASP. NET slow (no options for IIS application initialization and recycle configuration are set) 2.Entity Framework slow (not set per request one dbcontext and generate views) 3.

Multiple diagrams in Entity Framework 5.0Visual Studio provides a facility to split the design time visual representation of the Entity Data Model. This means can has multiple diagrams for one Entity Data Model.You can create a new diagram in multiple ways: Add a new diagram and drag and drop entities from Mod

[Chapter10]. [Insertauthorbook] @AuthorId =1, @BookId =2exec [Chapter10]. [Insertauthorbook] @AuthorId =2, @BookId =3exec [Chapter10]. [Deleteauthorbook] @AuthorId =1, @BookId =1EXEC sp_executesql N ' delete [Chapter10]. [Book] WHERE ([BookId] = @0) ', N ' @0 int ', @0=1How does it work?To map stored procedures to insert and delete operations in many-to-many relationships, we create stored procedures in the database and then use the stored procedure

using asynchronous and stored procedures for asp.net MVC applications This is the translation of the Microsoft Official tutorial Getting started with Entity Framework 6 Code The 5 series, this is Nineth: using asynchronous and stored procedures for ASP.net MVC applications Original: Async and Stored procedures with the Entity

Today, I want to introduce how to use the Advanced Configuration feature of Entity Framework code first to process another important component in domain driven design: value object, which is translated as a value object in Chinese. A value object is a class without a lifecycle or a unique identifier in the business logic. Which classes are Entity and which classe

The following system article is the introduction of EF6.0 knowledge, this chapter is the first articleOriginal address: Http://www.entityframeworktutorial.net/entityframework6/introduction.aspx-------------------------------------------------------------------------------------------------------------Entity Framework 6.0 Introduction:Welcome to Entity

Entity Framework power tools is an add-on of Visual Studio. Entity classes can be generated based on the database structure. For developers who use ADO. NET Entity Framework, especially those who useCodeDevelopers with priority (code first) can try it. If you want to use it

RememberEntity Framework 4.1/4.3 (concept)I have introduced the definitions of objectcontext objectset and dbcontext and dbset. After using 4.0 for a long time, I made a transition to 4.3. During this transition, I knew and used dbcontext and dbset. It feels good. The following table shows the objectcontext objectset dbcontext dbset: DbcontextAPI feature (dbcontext API function) Relevant EF4Feature/class (related to functions/classes in EF