Built from scratch to support modern applications, the CLR embodies a current view of what a programming environment should be. While it’s hard to claim complete originality for any idea in computer science today, it is fair to say that this essential .NET technology takes an interesting new approach to programming languages. The .NET Framework class library contains much more than this short list indicates. Every application written using the Framework depends on the CLR. Among other things, the CLR provides a common set of data types, acting as a foundation for C#, VB, and all other languages that target the .NET Framework.
This post explores why it makes sense to use Minimal APIs, the programming model compared to ASP.NET Core MVC, and some drawbacks that might make you consider using it. ASP.NET Core merges ASP.NET MVC, ASP.NET Web API, and ASP.NET Web Pages into
one application framework. When a browser requests an ASP or ASP.NET file, the ASP engine reads the file, executes
any code in the file, and returns the result to the browser. Both technologies enable computer code to be executed by an Internet server. I’m a bit mixed up on what will be more natural for me speaking of programming model.
Keep Domain Model and ViewModel separate
Having defined the interface, we can come back to the service class and finish implementing the listing method, using an instance of ICategoryRepository to return the data. By the way, the underscore prefix is another common convention to denote a field. I personally think it’s much cleaner to read, and a lot of frameworks and libraries use this convention. The Task class, encapsulating the return, indicates asynchrony.
In particular, this includes dynamic websites and web applications, including “Single Page Apps” (SPA). Furthermore, web-based services such as APIs and systems for real-time communication can be implemented. Over the years, different approaches have been used for the various purposes.
Languages
Providers that allow access to SQL Server, Oracle, and other DBMS are included with the .NET Framework. They allow a client application to issue commands against the DBMS and examine any results those commands return. The result of a Structured Query Language (SQL) query, for example, can be examined in two ways. Applications that need only read the result a row at a time can do this by using a DataReader object to march through the result one record at a time. No matter what language it’s written in, all managed code is compiled into Microsoft Intermediate Language (MSIL) rather than a machine-specific binary.
- In return, it gives us the most flexibility to build the layout and optimize the presentation.
- Moreover, it will be difficult to switch to a different vendor in the future.
- It creates a default web host using the startup configuration, exposing the application via HTTP through a specific port (by default, port 5000 for HTTP and 5001 for HTTPS).
- I’m going to apply some design concepts that will keep the application simple and easy to maintain.
- I store this instance in a private, read-only field _categoryService.
- The primary reason for this substantial change was that VB.NET was built entirely on the CLR.
One of the advantages of the MVC approach is that the individual concerns can be better tested. Furthermore, the separation of the concerns allows different controllers to be used. For example, instead of sending all user input to a single URL and reloading the page, AJAX via jQuery is used.
Easy Learning with “Run Example”
Mostly, your expenses will be spent on Visual Studio IDE and other additional collaboration and quality assurance services that Microsoft offers to simplify your work. As of today, the business version of Visual Studio will cost you $45/month for asp.net programming model every user. An enterprise release that includes various cloud, enterprise mobility, QA features, and more will be $250 per month per user. However, you still can try to become a Microsoft Partner to have a number of subscriptions for free.
Razor Pages is the recommended framework for cross-platform server-side HTML generation. These can be hosted on a variety of server environments in addition to IIS. The integrated Kestrel web server is used, which runs on Windows, Linux, and macOS. Popular web servers such as Nginx and Apache can be configured as reverse proxies in conjunction with Kestrel.
TAP Code Example
Developer does not require a lot of experience to develop
application in this model. It is the most popular model of ASP.NET but has been
criticized for the lack of control over the generated markup because a lot of
abstractions are present in this model. In aspx file we can write HTML tags, Server controls etc. and all
events and code written in .cs file. So by maintaining two file this model
separate code from front end tags for generating UI. Designed and developed by Microsoft, it supports the use of multiple programming languages, and code editors, and runs on multiple platforms. One of the major goals of .NET is to provide developers with a single platform for application development.
The successor to the very popular Active Server Pages (ASP) technology, ASP.NET applications are built from one or more pages. Each page contains HTML and/or executable code, and typically has the extension .aspx. As Figure 1-5 shows, a request from a browser made via HTTP causes a page to be loaded and executed. Any output the page creates is then returned to the browser that made the request.
Framework
This puts ASP.NET Core on par with JavaScript-based frameworks such as React. Web Forms provided Windows developers with a quick entry point into online programming. At the same time, however, the approach limited control over the HTML pages that were being delivered. ASP.NET MVC was soon added as an alternative development model. This followed the established “Model View Controller” (MVC) pattern and allowed concerns to be separated more clearly.
As the figure shows, the compiler also produces metadata that’s stored in the same file as the MSIL. Before execution, this MSIL is compiled into native code for the processor on which the code will run. By default, each method in a running application is compiled the first time that method is called. Because the method is compiled just in time to execute it, this approach is called just in-time (JIT) compilation. 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.
Building Distributed Applications
Since .NET Core is open source, its libraries, runtime, and compiler are available on GitHub and have many contributions. According to the Stack Overflow 2021 survey, ASP.NET took fifth place among the most popular web frameworks. If you’re writing in C#, F#, or Visual Basic, your code will run on each of the compatible operating systems.