Entity Framework Iqueryable Async

EntityFramework. NET Web API to write a simple web application that implements a CRUD scenario. All you need to do for this to work is add a CancellationToken parameter to your controller action method and pass that token on to whatever async task is doing the work. GetAllUrls(). There are many times that we would like to serve data from an in memory collection, whether it be for unit testing or just messing around to see how something works, where we have to/want to do it asynchronously. Install it to your project (for a layered application, to your data/infrastructure layer):. Only sources that implement IDbAsyncEnumerable can be used for Entity Framework asynchronous operations. Asynchronous compiled queries. NET entity is an ORM (object relational mapping) which creates a higher abstract object model over ADO. Now to the good part, the coding part. Specification. This means that any exceptions will be thrown when you call await on the returned task or when you try to retrieve the results using await myTask; You never do so, which means that the exception is thrown and caught higher up your call. Getting just the columns you want from Entity Framework Posted by Colin Mackay 31 July, 2011 7 Comments on Getting just the columns you want from Entity Framework I’ve been looking at trying to optimise the data access in the project I’m working on, and the major stuff (like getting a piece of code that generated 6000 queries down to just 7. The task result contains the first element in source. Like the snippet! Asynchronous Entity Framework Query. 'IQueryable' does not contain a definition for 'GetAwaiter' and no extension method 'GetAwaiter' accepting a first argument of type 'IQueryable' could be found (are you missing a using directive. The previous implementations of Entity Framework, prior to version 6 and Core, were not exactly a full implementation of the Repository and Unit of Work pattern. Caching with Entity Framework has always been a challenge. IQueryable is used when querying a data source (let's say a database). As we have decided to use Entity Framework 6 for all our projects going forward we recently had some issues mocking out the context class for unit testing the next layer up from the context. Sending IQueryable to higher layers can be a touchy subject… "there is nothing more frustrating (or more expensive to maintain) than a data layer leaking up the stack" "…literally no case where EF + Repository that exposes IQueryable makes sense". 0 but want the latest Entity Framework bits in their application. 0, Silverlight 4. NET Gridview With Entity Framework. In this post I will show how to use TypeScript together with AngularJS and ASP. It supports. The idea behind is simple. Queryable Extensions¶. Paolo Pialorsi Marco Russo Programming Microsoft ® LINQ in Microsoft. There are times when we want to make optimizations on some piece of code. Paging query results. The first one is called database-first approach. There are two types of IQueryable extension methods:. Normally I do not recommend repository pattern and unit of work pattern with entity Framework. Only providers that implement IDbAsyncQueryProvider can be used for Entity Framework asynchronous operations. In Nhibernate this would be the ISession abstraction. So what we need to do is create a set of classes that will allow us to mock asynchronous calls to our in-memory lists. So, CatFactory pretends to solve those limitations and provide a simple way to scaffold Entity Framework Core. With task based async now a reality with Entity Framework Users, it simply means more power to create better fault-tolerant applications, rapidly without worrying about the underlying Database schema changes. Entity Framework Pros, Cons and Usage We have already discovered most of the topics related to Entity Framework and now it is the time to reflect and compare with other options, find the stronger and weaker points and evaluate the cases where Entity Framework would be a satisfying solution. Examples include ToListAsync(), ToArrayAsync(), SingleAsync(), etc. Learn EF Plus - knowledge Base by example. Entity Framework only has an issue if you try and execute the computed properties on the database server. State = EntityState. Transactions. Add or Remove Multiple Entities in Entity Framework Entity Framework 6 introduced methods to add and remove a collection of entities in one go. The LINQ operators for querying objects of type IQueryable are defined in the Queryable class, and returns Expression> when you apply them on an IQueryable, which is a System. LINQ is a component in the. Then construct an IEnumerable of DbEntityValidationResult. All software goes through evolutionary process. We’re getting data from the Posts table where the Tags column equals “” and selecting every column from the Posts table. Entity Framework (EF) is designed to work with a variety of data sources. In this part you’ll see how to build a concrete implementation of the repository that was introduced in the preceding article in the series. Eager loading is achieved using the Include() method. 0 but want the latest Entity Framework bits in their application. So clearly I shouldn't be using IQueryable as a return type for my first QueryProject abstraction. It supports. So rather than. Now to the good part, the coding part. If you continue browsing the site, you agree to the use of cookies on this website. Building REST APIs using ASP. NET Core Async async/await Aurelia Autofac Bezpieczeństwo Big Data C# CLI CQRS csharp-internals Cypher Daj się poznać devmentors DevReview Disitrbuted. Entity Framework 6 work on both. Asynchronous execution has been introduced in. Infrastructure. NET, Entity Framework, LINQ to SQL, NHibernate / Iqueryable support lazy loading how Iqueryable support lazy loading how [Answered] RSS 3 replies. Entity Framework Core Generic Async Operations With Unit Of Work Generic Repository (Entitiy Fremawork Core ile Genel İş Birimi Deposu ile Senkron ve Asenkron İşlemler Yapmak) Bu yazımızda İngilizce olarak yazılmış bir makalenin türk&cced. In Nhibernate this would be the ISession abstraction. Even though, many open source solutions like the Scalable Object Persistence (SOP) Framework exist, I decided to implement a query level cache that uses the Transient Fault Handling Application Block to execute retry policies…. LINQ-enabled client API for issuing OData queries and consuming OData payloads. 5, and can offer a big performance benefit to those who haven’t upgraded from. It seemed to be a big enough blurb to warrant it's very own post, so I refactored it. There are two ways to do this: server side and client side. What i can speak to, as someone in the trenches building large scale applications, is that using the repository pattern with Entity Framework is a maintenance nightmare. net5 c# entity-framework entity-framework-core I have the following async method that queries for some data on a database. Start of with creating an server that will handle clients that connect, and requests that will be send. It is defined as follows: If you are fetching records from remote databases IQueryable should be used. ArgumentException: Expression of type 'System. Also note that this. What is Entity Framework and How Does it Support Bulk Updates? Written by Mark Shapiro on July 22, 2013 One frequently asked question about Entity Framework and other Object-Relational Mapping (ORM) libraries is how to perform bulk updates of records in an efficient manner, without unnecessary overhead or excessive database calls. It supports. Below code explains the Interface I used for creating the repository. Here, you will learn how to write LINQ-to-Entities queries and get the result in Entity Framework 6. NET Framework 4 implements LINQ, and how to exploit it. But let’s push to the limits and write asynchronous counterpart for our category query. ajcvickers changed the title EF. Regarding the book, i can't speak to why the author chose to use repositories. Jan 24, 2017 · Entity Framework Core provides a set of asynchronous extension methods that can be used as an alternative to the LINQ methods that cause a query to be executed and results returned. NET languages, originally released as a major part of. Ok, the second part I just made up but the sentiment exists. AsQueryable(); } and example of it usage: repo. Query and manipulate data by using Data Provider for Entity Framework Query and manipulate data by using Connection, DataReader and Command from the System. Welcome to Entity Framework 6 database-first tutorials section. FirstAsync (IQueryable, Expression>, CancellationToken) A task that represents the asynchronous operation. AsExpandable() is a method from LinqKit that you have with the PredicateBuilder and which is necessary. The ToDictionary () LINQ Extension Method. If you are using an earlier version, some or all of the. We can tell because there are no specified properties in the Select. Entity Framework is a highly recommended Object Relation Mapping tool used to build complex systems. Because the traditional provider for IQueryable and IEnumerable (the interfaces used for traditional sets) doesn’t implement the IAsyncQueryProvider interface needed for the Entity Framework asynchronous extension methods. NET ENTITY DATA Model. Here, we aim to throw light on the difference between ienumerable and iqueryable, their features and advantages. Specification. On the previous post we used a single ASP. DbContext class is the one among others that the Entity Framework team has created, in order to facilitate developers when accessing and manipulating database data. LINQ-enabled client API for issuing OData queries and consuming OData payloads. It's likely that you use async methods of entity framework; if yes, in order to mock we need to create an in-memory DbAsyncQueryProvider, and you can find the implementation here. Where(u => ). Most of the time the Add, Attach, Update, and Remove methods should be used. Testing with EF6 onwards. In my previous post I told the tale of how I used a wrong (but still awesome) tool to solve a problem. It is a good idea to use Snapshot Isolation Level since then there is no lock placed on a data row when it is read, so snapshot transaction never blocks another transaction. However, I'm struggling to find a viable alternative. The refactored code will look like this. why i cannot await 'System. Add or Remove Multiple Entities in Entity Framework Entity Framework 6 introduced methods to add and remove a collection of entities in one go. NET Gridview With Entity Framework. NET MVC application with Entity Framework (EF) to provide a user interface to Microsoft's AdventureWorks sample SQL database. net,entity-framework,entity-framework-6 You are executing an asynchronous method. Examples include ToListAsync(), ToArrayAsync(), SingleAsync(), etc. So, when you see a method like RemoveRange on a DbContext collection, you might think that's an opportunity to delete a bunch of objects in less time than deleting those same. NHibernate 5. NET developers to work with relational data using domain-specific objects ”. Em destaque no Meta Employee profiles are now marked with a “Staff” indicator. A similar extension method is included in the Entity Framework Feature CTP4 (see this article for details). This means that any exceptions will be thrown when you call await on the returned task or when you try to retrieve the results using await myTask; You never do so, which means that the exception is thrown and caught higher up your call. Supporting async LInQ evaluation on IQueryable mocks IQueryable is a tricky interface. In Nhibernate this would be the ISession abstraction. Let's take a closer look at what they are and how to use them. x allows you to execute the raw SQL query for the underlying relational database using SqlQuery() and ExecuteSqlCommand methods. ToList() What happens there? We are getting IQueryable object (not accessing database yet) using repo. net framework, which is used to update, create or delete record from table. Only sources that implement IAsyncEnumerable can be used for Entity Framework asynchronous operations. Thanks for reading. I'm trying to create a unit test for a class that calls into an async repository. NET application to query to database. Net Core 2 #25 Mock Entity Framework Async Operations. Only providers that implement IEntityQueryProvider can be used for Entity Framework asynchronous operations. The following example show you how to get all workout from the logged user. 1) doesn't support returning arrays, lists etc from explicitly compiled queries. IQueryable extends IQueryable and the IEnumerable. Entity Framework 6 - Dynamically creating temporary tables from IQueryable (Part 1 of 2) 2015 Strict Transport Security in ASP. Eager loading is achieved using the Include() method. Examples include ToListAsync(), ToArrayAsync(), SingleAsync(), etc. NET Framework 4. Entity Framework 6. >>using IQueryable provides a benefit in skip/take Linq calls by executing the filter on the server, rather than retrieving all records and then performing the filter on the client. NET Core, Entity Framework Core and ASP. The classes for the data entities form the Object side of the Object Relational Mapper (ORM) that is Entity Framework. framework introduced the async and await keywords that simplify asynchronous programming. NET; Comments. So, while in general the idea of abstracting EF Core is good, it will cause performance issues with IQueryable because the async processing of queryables is not standartized, and converting to IEnumerable changes the execution context, hence the implementation of single value returning LINQ methods. My name is Dejan Caric. That is a leaky abstraction and a violation of separation of concerns principle. Let's examine what we get back here. Use 'await' to ensure. Run(() => { this. In this article, we are going to create a web application using ASP. By default it tries to make sense of every field, and a complex model can have a lot of calculated or otherwise not-persisted properties. This version requires. I am using EF6. entity-framework async-await iqueryable. You can use. Spatial data and Entity Framework – from real world usage. When a request comes to your web api action, and you get data from database using entity framework (For example), your worker (your valuable worker) waits until database returns data. Tips to improve Entity Framework Performance. The following code was taken from Luke McGregor's repository called LinqExpander and updated to support. This blog post demonstrates how compiled queries work and how to use them. Entity;”命名空间,这个在搜索的时候,都会提到,但是我在 CodeFirstDemo 项目中,引用了这个命名空间,但发现还是没有 SaveChangesAsync 或 ToListAsync 的定义。. In this post I will show how to use TypeScript together with AngularJS and ASP. Install it to your project (for a layered application, to your data/infrastructure layer):. Introduction. These methods are generally a better option than the synchronous ones for applications that need to run multiple database queries at once. Entity Framework extensions for AutoMapper 8 July, 2015. It doesn’t make our application faster. NET Core and Entity Framework Core are getting more and more attractive nowadays and this post will show you how to get the most of them in order to get started…. 0 but want the latest Entity Framework bits in their application. This blog post demonstrates how compiled queries work and how to use them. So rather than. >>using IQueryable provides a benefit in skip/take Linq calls by executing the filter on the server, rather than retrieving all records and then performing the filter on the client. I am using the latest version of both the oftechnologies, the ASP. framework introduced the async and await keywords that simplify asynchronous programming. I’m not going to spend time here talking about what’s new,. My post on using basic LINQ operators actually started here. Entity Framework: (anti)pattern Repository September 7, 2017 September 7, 2017 Dmitriy Panyushkin. Entity Framework is doing so based on the IQueryable interface that DbSet implements. But the in memory database doesn't support execution of stored procedures in any way. Clear examples show you how to deliver your own data-access solutions faster and with leaner code. While it was certainly relevant to this topic, I wanted this post to focus on the things that make working with LINQ and Entity Framework unique. exe also supports the /silent switch for automated installation. This means that any exceptions will be thrown when you call await on the returned task or when you try to retrieve the results using await myTask; You never do so, which means that the exception is thrown and caught higher up your call. Configuring it to write to a file takes only a little bit more effort. Hi, I am afraid this is not straight forward as joining an in-memory collection with a database table is not supported. NET Core and Entity Framework Core. Clear examples show you how to deliver your own data-access solutions faster and with leaner code. Subscribe A Truly Generic Repository, Part 1 04 May 2016 on entity framework, c#, generics. NHibernate 5. Basically ToDictionary () is a very handy method for taking the results of a query (or any IEnumerable) and organizes it into a Dictionary instead. The first LINQ query is IQueryable and it doesn’t have the overload of. Build Async Services with ASP. Paging query results. Introduction. What is Entity Framework and How Does it Support Bulk Updates? Written by Mark Shapiro on July 22, 2013 One frequently asked question about Entity Framework and other Object-Relational Mapping (ORM) libraries is how to perform bulk updates of records in an efficient manner, without unnecessary overhead or excessive database calls. I have two methods which are basically going to use the similar query but with. Entity SQL is another way to create a query. Without projections, the database querying and the mapping are completely separate steps and so it is very common for the ORM to have to retrieve much more data than is. The Where extension method has two flavors. Generic Repository Pattern for Entity Framework. edmx files) when it has reached an order of 100 entities. Entity Framework Core provides a set of asynchronous extension methods that can be used as an alternative to the LINQ methods that cause a query to be executed and results returned. It's easiest to create a Unit Test Project and you will need to target. This set of classes is called view and if your data model is large then creating the view may delay the web application response to the first request for a page. NET Gridview With Entity Framework. Sqlite package. IQueryable -> System. It's easiest to create a Unit Test Project and you will need to target. NET Framework 4. I am using EF6. Let's say we have a controller action (taken from the Contoso University Entity Framework sample) that pulls in instructor, course, and enrollment information: This doesn't look so bad at first glance, but what isn't so obvious here is that this involves four round trips to the database, one for each set of data, plus some wonky lazy. Entity Framework Core provides a set of asynchronous extension methods that can be used as an alternative to the LINQ methods that cause a query to be executed and results returned. async-await c# dbcontext entity-framework-6. Blast_Dan There is not any reason to await what you are trying to do. Left Outer Joins in LINQ with Entity Framework As I spend more time reviewing code with clients and on public forums, I’m constantly seeing cases where people have issues with Outer joins in LINQ and the various flavors of LINQ. Regarding the book, i can't speak to why the author chose to use repositories. The DbSet and IDbSet implement IQueryable, so you can easily write a LINQ query against the database. FullName, opt => opt. Collections. If you continue browsing the site, you agree to the use of cookies on this website. Language Integrated Query (LINQ, pronounced "link" [citation needed]) is a Microsoft. Infrastructure namespace. Fetching the queries is equal to fetching a Linq query, so all the methods, including async/await, are available to you. Entity Framework/Core and LINQ to Entities (5) Query Translation Implementation; Entity Framework/Core and LINQ to Entities (4) Query Methods (Operators) Entity Framework/Core and LINQ to Entities (3) Logging and Tracing Queries; Entity Framework/Core and LINQ to Entities (2) Modeling Database: Object-Relational Mapping. Step 2: Add ADO. A task that represents the asynchronous operation. Sent the modified object to Service for persisting. Home; Wap; login|logout. This means that any exceptions will be thrown when you call await on the returned task or when you try to retrieve the results using await myTask; You never do so, which means that the exception is thrown and caught higher up your call. This is a summary of several posts/blogs I’ve read on the subject and source code available on github etc. Below is my approach how to implement repository pattern and unit of work with entity framework. 2 was released on December 4, 2018. For scaffolding the controller we need to select the "Web API 2 Controller with actions, using Entity Framework". OzCode now supports LINQ debugging with any kind of IQueryable collection. # re: Gotcha: Entity Framework gets slow in long Iteration Loops Now that you have the context split up at DAL or BL level, you might be able to use Parallel. Also note that this. NET Framework and. Entity framework is a great ORM shipped by Microsoft which allow you to query and modify RDBMS like SQL Server, Oracle, DB2 and MySQL etc. Information regarding the origin and location of the exception can be identified using the exception stack trace below. No matter how good an ORM is there will always be some situations that the queries produced will not meet a performance requirement. This can be Entity Framework , LINQ to MongoDB or even LINQ to Twitter. The DefaultCRUDRepository class makes easy all CRUD operations, and paged data retrieval on a EF DBSets possibly connected with other DBSets. Entity Framework is ORM. Only sources that implement IDbAsyncEnumerable can be used for Entity Framework asynchronous operations. Extensionmethod. Querying from the database is an I/O operation, however you haven't learned how Entity Framework behaves, so you're missing the benefit of making this operation asynchronous. I'm sure it works okay also with other databases that have Entity Framework 2. But there are some of the caveats as following. Today, EF is widely used by each and every. Entity Framework is an object-relational mapping (ORM) framework for the. The reason is DBContext itself is a Unit of Work and DBSet itself is a repository. Upgrade It's easy to get behind on versions of libraries, but the Entity Framework team has focused hard on improving performance, so you could see big benefits simply by upgrading. IQueryable extends IQueryable and the IEnumerable. Only sources that implement IAsyncEnumerable can be used for Entity Framework asynchronous operations. Entity Framework 6 introduced async support through a set of extension methods. So, while in general the idea of abstracting EF Core is good, it will cause performance issues with IQueryable because the async processing of queryables is not standartized, and converting to IEnumerable changes the execution context, hence the implementation of single value returning LINQ methods. Since DbSet implements IDbSet it is relatively easy to wire up a mock for your entity. Caching is very simple to understand, the first time a query is invoked, data are retrieved from the database and stored in the memory before being returned. 0 was released on October 10, 2017. Query Hints are an example: though often misused, they are occasionally. The Entity Framework's fluent interface for constructing SQL queries is based on IQueryables, not IEnumerables. For Take function, it already returns IQueryable, so there is no need to add AsQueryable(). We can also write LINQ queries against an IQueryable. stored procedures, table valued functions etc. So if you want to mock your repositories with lists, you are out of luck. Entity Framework Code First relationship mapping (One-to-many, Many-to-many, One or zero-to-One) Home Supporting async LInQ evaluation on IQueryable mocks;. Net applications and it is great because in enables you to create complex data queries without having to write the SQL statements by hand. Because the traditional provider for IQueryable and IEnumerable (the interfaces used for traditional sets) doesn't implement the IAsyncQueryProvider interface needed for the Entity Framework asynchronous extension methods. It supports. · Async · Interception · Logging IQueryable, however, can morph and change to its given context. net web application using c#, vb. EntityFramework - asynchronous queries unit tests Sometime ago I described how we can use Moq to unit tests elements of DbContext - please check post Mocking DbContext and DbSet with Moq. net-mvc , linq , entity-framework I am trying to return a model to my view from my controller below. NET en utilisant Web API 2 et Entity Framework 6. NET Core Async async/await Aurelia Autofac Bezpieczeństwo Big Data C# CLI CQRS csharp-internals Cypher Daj się poznać devmentors DevReview Disitrbuted. What makes this code possible is async supported added to Entity Framework 6, available at the time of this writing as a Prerelease NuGet package. Caching entities or query results to improve an application's performance is a very frequent scenario. This release marks a significant advancement from the first release that shipped with. This chapter discusses Entity Framework, a Microsoft library providing a different kind of LINQ technology, LINQ to Entities. There's one data set that changes very infrequently, but is queried very frequently. Introduction: Here we will learn how to create or generate QR code in asp. INTRODUCTION TO EF • ENTITY FRAMEWORK IN MICROSOFT’S ORM TOOL • HAS BEEN OUT SINCE 2008 • CODE FIRST HAS BEEN OUT SINCE 2011 3. EF Core provides a variety of different ways to start tracking entities or change their state. NET Portable Lib with support for. Entity Framework 6, CountAsync and PredicateBuilder My previous subject was about the ToListAsync() method used with the PredicateBuilder from LinqKit which was not working due to the AsExpandable () call and the not implemented IDbAsyncEnumerable interface. IEnumerable does not contain a definition for ToListAsync() and no extension method ToListAsync() accepting a first argument of type IEnumerable could be found (are you missing a using directive or an assembly reference?) Because ToListAsync() works on a IQueryable only, when we turned it in to a IEnumerable via AsEnumerable() we lost…. It is neither affiliated with Stack Overflow nor official Entity Framework. ObservableCollection {System. Now we will explain scaffolding. So if you want to mock your repositories with lists, you are out of luck. A Better Entity Framework Unit Of Work Pattern The standard Unit Of Work pattern has been around for the last 5 years. NET Entity Framework Comments (4) | Share Recently I've started working more and more with the ADO. In Nhibernate this would be the ISession abstraction. So if we are using Entity Framework (EF),. So you run from one implementation challenge into the other. The Where extension method has two flavors. Since DbSet implements IDbSet it is relatively easy to wire up a mock for your entity. EntityFrameworkCore. IQueryable is used when querying a data source (let's say a database). 0はasyncをサポートし、SaveChangesAsync()もしくはExecuteSqlCommandAsync()を使った実装が可能になる。また開発者はIQueryable. Projecting from an IDbAsyncQueryProvider Tag: entity-framework , async-await , automapper I have a project in which we use Automapper to Project() entities from our data access layer into our domain classes which are consumed by external callers (i. In the above snippet, we instantiate a new EntityQueryFilterCollection, to which we then add two individual filters, each of which is a Func. So, while in general the idea of abstracting EF Core is good, it will cause performance issues with IQueryable because the async processing of queryables is not standartized, and converting to IEnumerable changes the execution context, hence the implementation of single value returning LINQ methods. The previous part demonstrated what are the SQL translations of the LINQ to Entities queries. Run(() => { this. Unfortunate that post didn't covered all issues related to that topic. If you are using an earlier version, some or all of the. Supports OData v3. A Better Entity Framework Unit Of Work Pattern The standard Unit Of Work pattern has been around for the last 5 years. Entity Framework 6. Categories; }); } However again, all that 'this. NET Web API Odata is a framework that makes it easy to build OData services that reach a broad range of clients, including browsers and mobile devices. This article discusses the basics of using asynchronous operations of Entity Framework in desktop as well as web applications. net dynamically generate and display QR code using c#, vb. NHibernate 5. The task result contains the first element in source. LINQ-enabled client API for issuing OData queries and consuming OData payloads. Current version of Entity Framework Core (2. Web API With HttpClient or Consume Web API From Console Application Web API 2 Controller With Actions Using Entity Framework. Infrastructure. For information about how to choose between Code. Creating a context interface. That is a leaky abstraction and a violation of separation of concerns principle. When you're finished with this advanced Entity Framework course,. It is neither affiliated with Stack Overflow nor official Entity Framework. This means that when you do context. The collection of child objects is virtual, this helps Entity Framework populate it. Document Outline: In the document view, show the list of types and members in the file. ` or other async method on None async `IQueryable` #11737. To fetch DTO instances, the projection methods are used to append a projection to a Linq query formulated in an IQueryable. EntityClient namespace; perform synchronous and asynchronous operations; manage transactions (API) Query data by using LINQ to Entities. NET Core DShop Emilia Szymańska Entity Framework Events Event Sourcing Generics gifty Hubert Chylik IL Jacek Bylina Jakub Jędryszek legacy post Maciej Aniserowicz Mariusz. Using crystal-clear explanations, real-world examples, and around 100 diagrams, Entity Framework Core in Action teaches you how to access and update relational data from. These methods are generally a better option than the synchronous ones for applications that need to run multiple database queries at once. To illustrate pulling all the pieces together, let's create a repository that is backed by the Entity Framework. NET Entity Framework Comments (4) | Share Recently I've started working more and more with the ADO. In this post am going to explain how we can write Generic repository for Entity framework. There's one data set that changes very infrequently, but is queried very frequently. The result that we can dynamically use some of the libraries in. Ce tutoriel a pour but de vous enseigner les fondamentaux pour créer une API RESTful en C# ASP. But that wait is useless (database has its own workers). This entry was posted in Entity Framework and tagged Entity Framework, IEnumerable, IQueryable on September 27, 2014 by Aamol Gote. NHibernate 5. For scaffolding the controller we need to select the "Web API 2 Controller with actions, using Entity Framework". net-mvc entity-framework-6 testes moq ou faça sua própria pergunta. Below code explains the Interface I used for creating the repository.