ASP NET Core Dependency Injection: What is the IServiceProvider and how is it Built? Code with Steve

In this sample, we use the most basic overload of this method which takes no additional arguments. This calls down to another extension method that accepts some ServiceProviderOptions. In the previous post, we learned about the IServiceCollection, including how service registrations are converted to ServiceDescriptors and added to the collection. It contains the specifications for the .Net supported languages and implementation of language integration. It performs memory management, exception handling, debugging, security checking, thread execution, code execution, code safety, verification, and compilation. The code that is directly managed by the CLR is called the managed code.

The future of ASP.NET technology is very bright and great in accordance with the coming years as it has become today’s leading platform for web development. As the .net core is open source and it is really growing rapidly, we can say it has a very vast and developing scope in the future. For an developer, it’s very important to understand the ASP.NET page life cycle and ASP.NET application life cycle. It’s very much important to know how the request is being processed using IIS and how the web page is being processed and getting served to the user. At W3Schools you will find complete ASP references about built-in objects and components, and their properties and methods. Let’s return to the final line in the BuildServiceProvider method – scroll up a bit to see the code again!

When the managed code is compiled, the compiler converts the source code into a CPU independent intermediate language code. A Just In Time compiler compiles the IL code into native code, which is CPU specific. These applications are language-independent, so it allows you to select the language that is best for you.

  • These applications are language-independent, so it allows you to select the language that is best for you.
  • You could also use options within the ASP.Net app to handle cache busting.
  • This stage is achieved by calling BuildServiceProvider, another extension method on the IServiceCollection.
  • Lesser code encourages the application to easily manage and effectively maintain.
  • Let me introduce you the endpoint groups feature, which applies on Minimal APIs only.
  • Assuming all services are correctly registered and valid, the ServiceProvider constructor will return, and we have our built service provider.

Each framework has features and benefits that make them different. The framework I will be discussing in this blog post is ASP.NET and ASP.NET Core. It was first released in January 2002 with version 1.0 of the .NET Framework and is the successor to Microsoft’s Active Server Pages technology. ASP.NET is built on the Common Language Runtime , allowing programmers to write ASP.NET code using any supported .NET language. The ASP.NET SOAP extension framework allows ASP.NET components to process SOAP messages.

The framework is commonly used with Castle ActiveRecord, an ORM layer built on NHibernate. ASP.NET AJAX – An extension with both client-side as well as server-side components for writing ASP.NET pages that incorporate Ajax functionality. SignalR – A real-time communications framework for bi-directional communication between client and server. ASP.NET Web API – A framework for building Web APIs on top of the .NET Framework. To start with, the first thing we need to do is ensure we have npm installed. The easiest way to get npm in Windows is to just install Node.js, – npm will come with it.

Easy Learning with “Show Example”

Developed byMicrosoftASP.NET is an open-source, server-side web-application framework designed for web development to produce dynamic web pages. It was developed by Microsoft to allow programmers to build dynamic web sites, applications and services. The name stands for Active Server Pages Network Enabled Technologies. Finally, even though ASP.NET is open source and free to use, it is actively developed and supported by the world’s largest software company, Microsoft.

Metadata is the binary information describing the program, which is either stored in a portable executable file or in the memory. Assembly is a logical unit consisting of the assembly manifest, type metadata, IL code, and a set of resources like image files. ASP.NET greatly decreases the amount of code needed to build massive applications with tighter security and improved performance. The most recent framework of ASP.NET is ASP.NET core which is an open-source, cross-platform, and cloud-based internet-connected web application. ASP.NET framework reduces higher costs along with creating custom web applications with all features.

Third-party frameworks

In a large application, it is very time consuming to manually test every scenario, or to write and maintain additional code that tests of every scenario, whenever code is changed. When the ValidateOnBuild option is true, early checks will ensure that each required service can be created, with the exception of open generics. This is achieved by inspecting each descriptor and ensuring a call site chain can be created to provide an instance and any dependencies.

Tutorials, references, and examples are constantly reviewed to avoid errors, but we cannot warrant full correctness of all content. While using W3Schools, you agree to have read and accepted our terms of use,cookie and privacy policy. Interpreted code is not directly executed by the machine, but must be read and interpreted each time before being executed. Compiled code is usually faster and more scalable than interpreted code, and can do anything interpreted code can do.

This compilation process takes a small amount of time, but happens only once. After compilation, the code can be executed over and over by the .Net platform very quickly. Finally, in the above constructor, a new ConcurrentDictionary is created to hold information about realised services.

The ASP.NET framework is facilitated by a powerful toolkit and designer in the integrated development environment of Visual Studio. Drag-and-drop server controls and auto-deployment are only a couple of the features this versatile tool offers. This mounts Vue on our app div, allowing us to use any components we create within the body of the web app layout. So the first thing we want to do is bring the full capabilities of Vue into this project so we can start making components, with minimal disruption to the existing items. Perhaps the plan is to leave most of the jQuery pages intact, and slowly start to migrate things to Vue in time as needed.

ADO Objects

This way, the server becomes aware of the overall application state and operates in a two-tiered connected way. Items are selected from a page, say the items page, and the total collected items and price are shown on a different page, say the cart page. Only HTTP cannot keep track of all the information coming from various pages.

In this case, the root scope is the initial scope from which we expect services to be resolved. The constructor of the abstract ServiceProviderEngine provides further insight into the inner workings of the dependency injection library. This stage is achieved by calling BuildServiceProvider, another extension method on the IServiceCollection. It imparts data querying capabilities to .Net languages using a syntax which is similar to the tradition query language SQL.

Microsoft is heavily invested in their development platforms, their developer community, and supporting the software companies use to run these applications. This means you don’t need to worry about your software becoming yesterday’s news any time soon. When ValidateScopes is enabled, additional checks occur to ensure that scoped services are not resolved as dependencies of singleton services created from the root scope. This would violate the intent of using the scoped services since any singleton instances would hold a reference to the scoped service instance for the life of the application.

What is ASP.NET used for

ASP.NET session state and server side infrastructure keeps track of the information collected globally over a session. The page state is the state of the client, i.e., the content of various input fields in the web form. The session state is the collective information obtained from various pages the user visited and worked with, i.e., the overall session state. To clear the concept, let us take an example of a shopping cart. All client side user activities are forwarded to the server for stateful processing.

The exception is caught and used to produce a more useful end-user exception is thrown which identifies the problematic descriptor and the invalid dependency. Build-time checks add a little extra up-front overhead but can help ensure that the majority of your service descriptors are valid. Don’t worry if this is a little confusing at this point; we’ll revisit this type when we look at how services are resolved when the inner workings will become more apparent. The ASP.NET runtime transforms the .aspx page into an instance of a class, which inherits from the base class page of the .Net framework. Therefore, each ASP.NET page is an object and all its components i.e., the server-side controls are also objects.

ASP.NET works on top of the HTTP protocol, and uses the HTTP commands and policies to set a browser-to-server bilateral communication and cooperation. The two new properties added in the Page class are MetaKeyword and MetaDescription.


The basic architecture of the ASP.Net framework is as shown below. This is the standard protocol used across all web applications. Allowing WYSIWYG editing of pages, its features server controls can separate the code from the content. Examples might be simplified to improve reading and learning.

What is ASP.NET used for

Base One Foundation Component Library is RAD framework for building .NET database and distributed computing applications. After doing this, we can run “npm run build” from the project directory (same directory the package.json file is in) to compile our Vue to javascript. ASP.Net is a development language used for constructing web-based applications. ASP.Net is designed to work with the standard HTTP protocol.

ASP.NET is written using Object Oriented Programming languages such as C# or Object Oriented Programming provides a framework and patterns for code organization and reuse. The compilation process also provides validation that all of the code is consistent. Interpreted languages would not identify this error until the code is actually run and tested.

Let me introduce you the endpoint groups feature, which applies on Minimal APIs only. Endpoint groups are a way to declare some common routing information across several minimal endpoints, but more also, like constraints such as Authorization, CORS rules etc etc…. We will see in this post what you can do with endpoint groups and how useful it could be. Because ASP scripts are executed on the server, you can not view ASP code in a browser, you will only see the output from ASP which is plain HTML. This will make it easier for you to understand how it works. When a browser requests a normal HTML file, the server just returns the file.

The browser submits a web form to the web server and the server returns a full markup page or HTML page in response. ASP.NET is used to produce interactive, data-driven web applications over the internet. It consists of a large number of controls such as text boxes, buttons, and labels for assembling, configuring, and manipulating code to create HTML pages. In ASP.NET applications, source code and HTML files are together, so ASP.NET pages are easy to manage and write. These applications offer improved efficiency by taking advantage of early linking, just-in-time compilation, native optimization, and caching services straight out of the box.

current community

Software cost is an important factor when developing a website. It used to be that developers had to buy expensive software in order to build applications. Companies with more than 5 developers must purchase a license to use Visual Studio, but the cost is competitive with professional IDEs for other platforms. Microsoft also provides Visual Studio Code, a lighter-weight IDE and editor, which is free for everyone, including corporations. ASP.NET is an open source, server-side web application framework created by Microsoft that runs on Windows and was started in the early 2000s. ASP.NET allows developers to create web applications, web services, and dynamic content-driven websites.

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