scaffold dbcontext

You need to know three methods to monitor SQL flow in EntityFramework: Log, SqlServerProfile, EFProfile, entityframework When you are learning entityframework, we all know that writing in linq is a breeze, and you no longer need to differentiate the SQL versions of different RDMS. However, high efficiency leads to poor flexibility. Unable to control the SQL generation policy, so you must not have good tools to monitor SQL. This article introduces three monitoring methods: Log and SqlServer profi

called a dynamic proxy, and contains the logic that notifies the Entity Framework when the attribute value changes in the overloaded attribute. Snapshot-based change tracking relies on the Entity Framework to perform detection when changes occur. The default behavior of DbContext API is to automatically perform detection through events on DbContext. DetectChanges not only updates the context state manageme

A simple database access layer based on EntityFramework Core, applicable to lightweight database services and lightweight Databases The code of this access layer is actually from a senior in the garden. I just thought it was good and recorded it. The access layer needs to install EntityFramework Core through Nuget, but I personally think EF 6 can also be used. It is best to match databases with SQL Server (supported by Microsoft, you know) Post Code below First, IRepository. cs Public interface

Apworks Framework practice (6): using the Entity Framework-based warehouse infrastructure, apworksentity In the previous chapter, we have designed a simple domain model. Next we hope to realize the persistence and query of the domain model. Apworks provides the warehousing infrastructure for Entity Framework, nhib.pdf, and MongoDB. This section describes how to use the Entity Framework-based Warehousing mechanism in Apworks.Build an Entity Framework-based infrastructure Before using the warehous

This article copyright belongs to the blog park and the author Wu Di Common All, welcome reprint, reprint and Reptile Please indicate the blog Park snail original address http://www.cnblogs.com/tdws/p/5874212.html.Recently, we are going to share a series of. NET Core Utility backend architectures, so we'll start with EF core. At present, all the major forums in China, Daniel's share is to follow the official Microsoft document, the Web layer directly applied EF Core. Of course this is not a prob

Nuget Package DbContext Warehousing Default Warehousing Custom Warehousing Specific storage base Classes Custom warehousing Examples Warehousing Best Practices ABP can use any ORM framework, it has built-in Entityframe (hereinafter referred to as EF), this document will explain how to use EF in ABP, we assume you have a preliminary understanding of EF.Nuget PackageThe NuGet packa

This problem occurs in the processing of hierarchical queries. Based on previous experience, when querying the subset B [] of A and A, join the score to Two Queries quickly, however, when there are many sub-sets and so on, the time is not linear growth but an index, because the efficiency load caused by repeated data increases. For example, the first type of unit test time is about 4-6, when we add three child sets, we will be in the range of 14-22, while the practice in Ef is to set up unicon f

By default, when EF calls SaveChanges (), all generated SQL commands are "wrapped" into a "transaction (transaction)", and the entire transaction is rolled back as long as one of the data update operations fails.In most cases, if you always use one instead of multiple DbContext objects in the data Update operation code, and just call SaveChanges () at the last time, then the default transaction mechanism for EF is sufficient, and there is no need to d

1 class Program2 {3 Static voidMain (string[] args)4 {5 //DbContext context = Contextfactory.getcontext ();6 //OrderInfo oi = new OrderInfo ()7 //{8 //ordertitle= "Samsung mobile"9 //};Ten //Oi. CustomerInfo = new CustomerInfo () One //{ A //customername= "Chun Yuchon", - //Customerdate=datetime.now - //}; the

{public int CustomerId {get; set;}public string Name {get; set;}public string Company {get; set;}public string ContactTitle {get; set;}}We have set up the DbContext subclass and the customer entity set, as shown in Listing 10-2:Listing 10-2. The DbContext subclass for Customer entitiespublic class Ef6recipescontext:dbcontext{Public dbsetPublic Ef6recipescontext (): Base ("Name=ef6codefirstrecipescontext"){}

default:Public AccountController () this (new usermanagernew userstorenew Applicationdbcontext ()))) { } One that can be passed to the Usermanager instance:Public AccountController (usermanager UsermanagerThese are classes of user-managed business logic for a generic type. The reason for generics is that the extension of profile information is supported and is not described in detail here. UsermanagerUsermanagerPublic Usermanager (iuserstoreIuserstoreThis in

; } } }}2. Marking the classes to be injected in the assemblyusingMicrosoft.entityframeworkcore;usingMicrosoft.Extensions.DependencyInjection;usingSystem.Linq;usingSystem.Threading.Tasks;usingUser.domain;usingUser.Domain.POCOModels;usingutil.attributes;namespaceDDD. repositories.userrepositories{[Usedi (servicelifetime.scoped,typeof(iloginrepository))] Public classLoginefcorerepository:iloginrepository {Private ReadOnlyDbContext DbContext;

Chapter3.customer"); 5//Add new test Data 6 var cus1 = new Customer 7 {8 Name = "Robert Stevens", 9 Email = "[emailprotected]" 10}; One-to-one var = new Customer cus2 {"Julia kerns", 14 Email = "[emailprotected]" 15}; var cus3 = new Customer page {"Nancy whitrock", 19 Email = "[emailprotected]" 20}; The context. Customers.add (CUS1); The context. Customers.add (CUS2); The context. Customers.add (CUS3); The context. SaveChanges (); 25} 26 27 Use

sources view the source used by the gemRails New ProjectName--Create a new ROR projectRails server--start rail server, similar to booting tomcatRails Generate scaffold--new scaffolding, this is the reason why Ruby benefits 1min to build a blog.Rails Destory Scaffold--removing scaffoldingBundle InstallBundle updateBundle Show--show a gem locationPS: Look at my list of commands, I know that I can not be a li

= (localdb) \v11.0;database=efgetstarted.consoleapp; Trusted_connection=true; ");1819//Visual Studio 2012 | Instances of SQL Express created using Visual Studio20//Optionsbuilder.usesqlserver (@ "SERVER=.\SQLEXPRESS;DATABASE=EFGETSTARTED.CONSOLEAPP; Trusted_connection=true; ");21st}2223ProtectedOverridevoidOnmodelcreating (ModelBuilder ModelBuilder)24{25//Configure Blog.url to RequiredModelbuilder.entity()27. Property (b =B.url)28. Required ();29}30}//Blog31PublicClassBlog32{33Publicint BlogId {

This article describes how to deploy the settings file in the Python Django framework, including some simple analysis of the disadvantages of local_settings, for more information, see django's lack of necessary standards in the directory structure division of a project, in addition, it is hard to say who is doing better. According to my project organization habits, I released a project dj-scaffold. A few days ago I made an "advertisement" for my proj

{Get;Set; } - $ Public intBlogId {Get;Set; } $ PublicBlog Blog {Get;Set; } - } -}v. Create a databaseOnce you have the model, you can use data migration (migrations) to create the database.1. Select Tools->nuget Package Manager (Nuget Package Manager) on the Menu->package Manager Console (Package Manager console);2. Execute the command "Add-migration myfirstmigration" to create a migration bracket (scaffold) for the model just

Create a restful ResourceProblemYou 've heard all the buzz about creating restful this and that. There'sLittle doubt that rails 2.0 heavily favors the rest into tural style1And that it will continue to do so.You're feeling a little out of the loop, and what you 've got so far isA tad too academic. As a practical matter, you 'd like to create a web-Accessible API for one of your models and write a client programAdminister that model remotely. What can resources do for you?SolutionLet's forget abo

") 8. Create a scaffold model (generate scaffold Post name: string title: string content: text) 9. Execute the rake task and synchronize the new data model to the database. rake db: migrate 10. Add the link to the scaffold on the homepage (modify it in views \ home \ index.html. erbPosts_path%> Pay attention to the posts_path in it, as agreed in writing 11. Open

. Suppose we have such a table in it: Create Table 'blogs '('Id' int (10) unsigned not null auto_increment,'Title' varchar (255) not null,'Ctime' datetime default null,'Content' text not null,'Latestbak' text,'Longetbak' text,Primary Key ('id ')) Engine = InnoDB auto_increment = 1 default charset = utf8 After the configuration is complete, modify config/database. yml. It is easy to understand. My yml Development Section is as follows: Development:Adapter: MySQLEncoding: utf8Database: susanblogUs