scaffold dbcontext

Tags: des blog io ar use sp data div onDynamically create an Entity Framework model and create a databaseUse System. Reflection. Emit + Code First model to create an object class and DbContext and create a database:1 using System; 2 3 public class Blog 4 5 {6 7 private int id; 8 9 private string name; 10 11 public int ID12 13 {14 15 get16 17 {18 19 return this. id; 20 21} 22 23 set24 25 {26 27 this. id = value; 28 29} 30 31} 32 33 public string Name34

12803 46196 25635 5th round 16216 12463 12221 40064 23749 Average 15734 12548 12375 42526 24942 Let's look at the GC situation: Chloequerytest Chloesqlquerytest Dapperquerytest Eflinqquerytest Efsqlquerytest GC Recycle times 116 47 49 538 359 Accidents do not know, a test scare jump. See this result, I

Ninesky.models; Namespace Ninesky.idal { /// Simply, inherit from the Interfacebaserepository interface and pass in the entity class user. We see in Class View whether the interface of the base class is inherited. 2, DAL projectThe DAL project is the implementation of the Idal project interface, the project to create the DbContext class, for the DbContext class many people discussed its efficiency

Solution: The context cannot be used while the model is being created, contextcreated When I used Entity Framework (v6.1.3), I suddenly encountered this problem. I have been doing well before. How can I solve this problem? The experiment process (bitter) in "good" and "bad" projects is omitted here and the answer is given directly. The answer is: DbSet instantiation is not implemented based on the DbContext mechanism. (My situation) We generally write

= ". jpg" | fileExt = ". png "){ImageServerEntities dbContext = new ImageServerEntities (); Var isiList = dbContext. ImageServerInfo. Where (x => x. FlgUsable = true). ToList (); Int countN = isiList. Count (); // Filter the available image server set composite as C from the status table and obtain the total number of records N of the set. Then a random number R1 is generated using the random function and

content of x, we are still the old routine. First, we prepare a model to create a basic model for booking flights. One is the flight entity and the other is the booking entity. See the following for details: /// /// public class TripReservation { public FlightBooking Filght { get; set; } public Reservation Hotel { get; set; } } This type of entity is used to maintain flights and reservations, and is used when booking flights are created. Code-based Configuration is displayed in EntityFramew

object is powerful, most users encapsulate a layer of warehousing on the basis of me and simplify addition, deletion, and modification. The complex functions are implemented using SqlSugarClient. So I integrated the SimpleClient class so that you don't have to write additional code. You can create a class to inherit SimpleClient or directly use SimpleClient // Expand a SimpleClient named DbSetpublic class DbSet Create a DbContext class that contai

MVC5 + EF6 + Bootstrap3 (10) Data Query page, mvc5ef6 Source: Slark. NET-blog Park http://www.cnblogs.com/slark/p/mvc5-ef6-bs3-get-started-search-page.html Previous section: MVC5 + EF6 + Bootstrap3 (9) HtmlHelper usage (below) Download source code: Click here to downloadDirectory Preface Create Model Create Database context DbContext Create initialization data Create a Controller Create View View results page View Database End Preface We hav

{public static dbcontext getcurrentcontext () {dbcontext OBJ = callcontext. getdata ("dbcontext") as dbcontext; If (OBJ = NULL) {OBJ = new model. datacontainer (); callcontext. setdata ("dbcontext", OBJ);} return OBJ ;}} CallcontextIt is a special collection object simila

){_ Repository = repository;}Public ViewResult Index (){Throw new NotImplementedException ();}}} In fact, the above are all references. The purpose of Unity is to further delay the instantiation of Repository or UnitOfWork (often evolved into a Service) and give it to the IoC container for injection. To achieve more flexible switching, such as switching from MS Entities to MySql Entities or from ObjectContext to DbContext (CodeFirst ). The following

. Disabling proxy can speed up serialization. The code for disabling proxy adds the following code to the class that inherits dbcontext PublicSchoolcontext (){This. Configuration. proxycreationenabled=False;} The following shows the differences between agent and agent. Our administrator is a navigation attribute. We can see a long string of numbers and letters. When we access this administrator attribute below, we will get the Administrator

to better support test-driven development and domain-driven development. In fact, the idea of POCO is introduced from Java, which is not nice to say. Many of the good ideas in C # are introduced from Java. Here I am neutral. You can check POJO if you like. 4,LINQ to Entities Supports Language Integrated Query (LINQ) to query object types defined in the conceptual model. 5. ObjectContext The definitions of ObjectContext on the Internet are many words, and it seems that they want to vomit bloo

inherit simpleclient or use SimpleClient directlyWe're going to expand a simpleclient named Dbsetpublic class dbsetLet's create a DbContext class that contains the DB, Studentdb, and SchooldbCreate a DbContext class that uses Dbset (or simpleclient) public class dbcontext{public DbContext () {

Label:Code First1, if any configuration is not modified, the default connection Express or LOCALDB, in order is Express, LocalDb, if not installed using the rear2, if there is a connection string in the configuration file, and the connection string name is DbContext inheriting the class name (whether it does not matter if it contains a namespace), then DbContext inherits the classYou only need to call the d

the Follo Wing figure. The Figure 4:new Post with the body Field Create a few the more blog entries. For example: Figure 5:more Blog Posts doing more:validating Input Here's the add code to the Post class to ensure that the users provide values for both the title and the body fields. In the Projects window, expand the Models node and double-click post.rb to open the file in the editor. Open up a line inside the Class definition, type VP, then press TAB. The IDE replaces VP trigger w

confirmation and error handling, and for rails, starting with basics and repetition helps make things easier. Rails and Forms Rails provides powerful support for getting data from a relational database and passing it into a Ruby object. So you also expect to pass data between the model object and the user's browser, and it has the same support. We have seen this example. When we create our product management controller, we use scaffold generat

Code-I to migrate the update database (http://go.microsoft.com/fwlink/?LinkId=238269). This means that the database model has changed, but I have used the migration, why will it change? My database has two tables, one userinfoes, one is equipments, I open the database and found equipments was deleted. Using automatic migration again prompts that automatic migration is not applied and may result in data loss. Plus-force enforcement, equipments appeared, but Userinfoes was deleted, repeatedly i

The code of this access layer is actually a senior in the garden, I just feel so, recorded down.This access layer requires the installation of EntityFramework Core through NuGet, but the individual believes that EF 6 is also available.collocation database, preferably SQL Server (Microsoft Support, you understand)Paste the following codeFirst IRepository.cs.Public interface irepository:idisposable { Gets a table of iquerable interface queries iqueryableInsert a record void

These days the company structure adjustment, the new iteration back end uses the ABP framework and the Codefirst model, the execution process encountered a non-inevitable difficult to locate the problem, hereby records.PhenomenonThe program accesses the MySQL database times an exceptionSystem.InvalidOperationException:The default Dbconfiguration instance is used by the Entity Framework before the ' Mysqle Fconfiguration ' type was discovered. An instance of ' mysqlefconfiguration ' must is set a

Navigation Catalog: Farseer.net Lightweight ORM Open source Framework Catalog Previous: Farseer.net Lightweight ORM Open source framework v1.x : Database configuration file Filed under: Farseer.net Lightweight ORM Open source framework v1.x : Table entity class mappings ObjectiveThe above describes the use of database configuration, the way to build a database link we know how to do it.In fact, so far we still have not talked about the code aspect, spent a lot of space to e