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Database migration of the ASP. NET Core series "Six" Entity Framework Core

following commands are executed:Remove-migrationNote that this is a migration that has not been applied and can be removed. If you have applied it, you will receive an error messageMigration RollbackThere are times when we need to roll back to a previous migration version. For example, when we deploy, the development version and the stable version must be different.Then we'll use the rollback command.Execute as follows :Update-database here fill in the name of the version that needs to be roll

Pro ASP. NET Core MVC 6th Chapter III

that responds to model changes. I will explain the role of razor in the 5th chapter. ASP. NET Core MVC does not impose any restrictions on the implementation of the domain model. You can use regular C # objects to create models and use any database, object affinity mapping framework, or. NET supports other data tools

Learning ASP. NET Core Razor programming Series 3-create a data table and a project Basic page, asp. netrazor

the preceding command is executed, enter Update-Database.Migrations/File to create a database table. The execution process is as follows. 5. After the execution is completed, the Book table will be created in the database. For example. 2. Create a page for adding, deleting, modifying, and querying the Book Management System 2. Enter the following command in the Command window: Dotnet aspnet-codegener

Pro ASP. NET Core MVC version 6th chapter II (first half chapter)

Catalogue Chapter Two the first MVC application the best way to learn a software development framework is to jump into his interior and use it. In this chapter, you will create a simple data login application with ASP. NET Core mvc. I'll show it step-by-step so you can see how to build an MVC application. To make things simple, I skipped some technical details,

ASP. NET Core what's in the HTTP pipeline? asp. netcore

ASP. NET Core what's in the HTTP pipeline? asp. netcorePreface It's about to end on March 13, 2016. The time is so fast. After writing the Identity series last time, the response was good, so I was planning to write an ASP. NET

ASP. net mvc + LINQ develop a book sales site

Many people in the garden have explained their theoretical knowledge and there are also many examples on the Internet, but many examples are from prieview1. The purpose of writing this blog is to use ASP. net MVC + LINQ is used as an example project to demonstrate ASP. net MVC + LINQ has some features. I am also learni

ASP. NET core EF core (Entity Framework 7) Database Update maintenance

Tags: data-skin env text NIC Tor tracking see for yourselfCreatedata-baseifnotexists, such as the previous API has been deprecated, is now using the Microsoft packaged, simplified, efficient API,migrations Because the old API has to pay a high price, and the limitations Open VS2017, select Tools->nutget Package Manager--Packages Manager console 1. Enter add-migration myfirstmigration instruction The Migrations folders and files are automatically generated based on the current DbContext, which

Learn ASP. NET Core Razor Programming Series 11--Update the new field to the database

Tags: book title Update name Create Project class MEP get fieldLearn the ASP. NET Core Razor Programming series Catalog Learn ASP. NET Core Razor programming series One Learn

The static file caching method of ASP. NET Core, asp. netcore

The static file caching method of ASP. NET Core, asp. netcoreI. Preface InOptimize Web ServicesForStatic resource files, Usually throughClient Cache,Server Cache,CDN CacheThese three methods are used to relieve the client's pressure on connecting requests to the Web server. This article describes the implementation pro

ASP. NET Core 2.0: III. project structure, asp. netcore

ASP. NET Core 2.0: III. project structure, asp. netcore In this chapter, let's take a look at the project structure of ASP. NET Core 2.0 in comparison to the

ASP. NET Core dependency injection, asp. netcore

ASP. NET Core dependency injection, asp. netcore1. What is dependency Injection? Why use it? It is especially easy for beginners to confuse concepts such as IOC (Iversion of Control) and DI. 1.1 Dependency a dependency is generated when one class requires another class to complete the work. For example, we need to comp

ASP. NET Core 2.0: 1. Overview, asp. netcore

ASP. NET Core 2.0: 1. Overview, asp. netcoreWhy ASP. NET Core? . NET Core was a bit itchy when

Learn ASP. NET Core Razor programming series nine--Add query function

Learn the ASP. NET Core Razor Programming series CatalogLearn ASP. NET Core Razor programming series OneLearn ASP. NET

Introduction to ASP. NET Core Identity (2), asp. netidentity

Introduction to ASP. NET Core Identity (2), asp. netidentity Preface In the previous article, I talked about the words and corresponding knowledge points about Identity, and learned that Identity is in the entire logon process. authentication is an important part of the Authentication system. Authentication is not appl

Detailed explanation of how to record and view logs in ASP. NET Core applications, asp. netcore

Detailed explanation of how to record and view logs in ASP. NET Core applications, asp. netcore Logging is not only an important feature for our developed applications, but also for the ASP. NET

ASP. NET Core Chinese Document Chapter 3 principle (1) application startup, asp. netcore

ASP. NET Core Chinese Document Chapter 3 principle (1) application startup, asp. netcore Original article: Application StartupAuthor: Steve SmithTranslation: Liu Yi (AlexLEWIS)Proofreading: Xie Yi (kiler398) and Xu dengyang (Seay) ASP. N

"ASP. NET Core" ASP-Dependency Injection

request that spans multiple actions or multiple service, repository, For example, the most commonly used dbcontext it can be an instance. It can reduce the consumption of instance initialization, and also can realize the function of cross service transaction. (Note: All service with EF is required to be registered as scoped in ASP.)The way to achieve this is to share a scope within the lifetime of the entire reqeust request. Iii. application of Di in

General processing programs, ASP. NET core knowledge (5), asp.net Core

General processing programs, ASP. NET core knowledge (5), asp.net CoreFirst glance 1. Create a general processing program Create a general processing program 2. Check the code in it. Public class MyHandler: IHttpHandler { Public void ProcessRequest (HttpContext context) { Context. Response. ContentType = "text/plain "; Context. Response. Write ("Hello W

Add support for the HAL to RESTful services in the ASP. NET Core Web API

. After the client obtains the response from this server, it is convenient to bind the information to the interface without having to look for the associated information through multiple API calls. On the other hand, the hypertext links contained in this JSON response can also be dynamic, such as paging navigation links, which makes it very convenient for the client to implement paging functionality. This article focuses on how to add support for the HAL to the RESTful API that you have designed

Directory Navigation of the ASP. NET MVC with Entity Framework and CSS book translation series

The ASP. NET MVC with Entity Framework and CSS is a relatively new book on ASP. NET MVC, EF, and CSS Technology published in 2016, and I will try to translate this book for future reference. However, as my English proficiency is l

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