With ASP you can use client-side scripts as well as server-side scripts. Maybe you want to validate user input or access a database. ASP provides solutions for transaction processing and managing session state.
Asp is one of the most successful language used in web development. DLL, is not modified when installing the. NET Framework. NET scripts on the same machine. NET is based on the fundamental architecture of. Visual studio provide a uniform way to combine the various features of this Architecture.
At the bottom of the Architecture is Common Language Runtime. NET Framework common language runtime resides on top of the operating system services. The common language runtime loads and executes code that targets the runtime. This code is therefore called managed code. The runtime gives you, for example, the ability for cross-language integration.
NET Framework provides a rich set of class libraries. All of them are brought together by the Services Framework, which sits on top of the common language runtime. NET is not simply the migration of the popular ADO model to the managed environment but a completely new paradigm for data access and manipulation.
NET is intended specifically for developing web applications. This is evident from its two major design principles:. The 4th layer of the framework consists of the Windows application model and, in parallel, the Web application model. The Web application model-in the slide presented as ASP. NET comes with built-in Web Forms controls, which are responsible for generating the user interface. They mirror typical HTML widgets like text boxes or buttons.
If these controls do not fit your needs, you are free to create your own user controls. Web Services brings you a model to bind different applications over the Internet. This model is based on existing infrastructure and applications and is therefore standard-based, simple, and adaptable.
Web Services are software solutions delivered via Internet to any device. Today, that means Web browsers on computers, for the most part, but the device-agnostic design of. NET will eliminate this limitation. After this short excursion with some background information on the. Web applications written with ASP. NET will consist of many files with different file name extensions.
The most common are listed here. Native ASP. NET files by default have the extension. Web Services normally have the extension. Your file names containing the business logic will depend on the language you use.
So, for example, a C file would have the extension. You already learned about the configuration file Web. Another one worth mentioning is the ASP. NET application file Global. But now there is also a code behind file Global. NET code.
The easiest way to start with ASP. You can use directives to specify optional settings used by the page compiler when processing ASP. NET files. For each directive you can set different attributes. One example is the language directive at the beginning of a page defining the default programming language. NET that these controls can be accessed on the server and on the client. Optionally you can specify the language for the block. The code block itself consists of the definition of member variables and methods.
Render blocks contain inline code or inline expressions enclosed by the character sequences shown here. The language used inside those blocks could be specified through a directive like the one shown before. This causes the HTML element to be treated as a server control. It is now programmatically accessible by using a unique ID. There are two different kinds of custom controls.
On the one hand there are the controls that ship with. NET, and on the other hand you can create your own custom controls. Using custom server controls is the best way to encapsulate common programmatic functionality. Just specify elements as you did with HTML elements, but add a tag prefix, which is an alias for the fully qualified namespace of the control.
If you want to get programmatic access to the control, just add an Id attribute. You can include properties for each server control to characterize its behavior.
For example, you can set the maximum length of a TextBox. Those properties might have sub properties; you know this principle from HTML. Now you have the ability to specify, for example, the size and type of the font you use font-size and font-type. The last attribute is dedicated to event binding. This can be used to bind the control to a specific event. If you implement your own method MyClick , this method will be executed when the corresponding button is clicked if you use the server control event binding shown in the slide.
You can create bindings between server controls and data sources. The data-binding model provided by ASP. NET is hierarchical. That means you can create bindings between server control properties and superior data sources. If you need to create an instance of an object on the server, use server-side object tags. When the page is compiled, an instance of the specified object is created. Net framework tutorial, you will learn ASP. You will also learn Web Forms,. NET interview questions, etc.
NET for beginners course. Skip to content. Report a Bug. Next Continue. Home Testing Expand child menu Expand. SAP Expand child menu Expand. Web Expand child menu Expand. Must Learn Expand child menu Expand. Big Data Expand child menu Expand. NET Core step by step.
Here, in these. NET Core Tutorials, we will provide a hands-on approach to the subject with step-by-step program examples that will assist you to learn and put the acquired knowledge into practice. You can say it is the new version of ASP. The framework is a complete rewrite from scratch in order to make it open-source, modular, and cross-platform. NET Core and.
NET Framework. NET Core is a new version of the. NET Framework, which is a free, open-source, general-purpose development platform maintained by Microsoft. It is a cross-platform framework that runs on Windows, Linux, and macOS. NET Core framework can be used to build different types of applications such as console, desktop, web, mobile, cloud, IoT, machine learning, Microservices, games, etc…. NET Core is written from scratch to make it a modular, lightweight, fast, and cross-platform framework.
It includes the core features that are required to run a basic. NET Core app. Other features are provided as NuGet Packages, which you can add to your application as needed. In this way, the. NET Core application speed up the performance, reduce the memory footprint, and becomes easy to maintain. There are some limitations to the. For example, it only runs on the Windows OS Platform. Also, you need to use different. In addition to this, the. NET Framework is a machine-wide framework.
Any changes made to it affect all applications taking a dependency on it. So, there is a need for a single framework that works everywhere.
So, considering this, Microsoft created. The main objective of. NET Core is to make. NET Framework open-source, cross-platform compatible that can be used in a wide variety of verticals, from the data center to touched-based devices. Feedback will be sent to Microsoft: By pressing the submit button, your feedback will be used to improve Microsoft products and services.
Privacy policy. This article provides an overview of key topics for understanding how to develop ASP. NET Core apps. NET Core apps created with the web templates contain the application startup code in the Program. The Program. NET Core includes dependency injection DI that makes configured services available throughout an app.
Services , builder. Services in the preceding code. When the WebApplicationBuilder is instantiated, many framework-provided services are added. In the preceding highlighted code, builder has configuration, logging, and many other services added to the DI container.
Services are typically resolved from DI using constructor injection. The DI framework provides an instance of this service at runtime. The following code uses constructor injection to resolve the database context and logger from DI:. The request handling pipeline is composed as a series of middleware components. Each component performs operations on an HttpContext and either invokes the next middleware in the pipeline or terminates the request.
Middleware added to the app is highlighted in the following code:. For more information, see ASP. NET Core Middleware. On startup, an ASP. NET Core app builds a host. The host encapsulates all of the app's resources, such as:. NET Core templates. The Minimal and Generic hosts share many of the same interfaces and classes. The ASP. The WebApplicationBuilder. Build method configures a host with a set of default options, such as:. The Generic Host allows other types of apps to use cross-cutting framework extensions, such as logging, dependency injection DI , configuration, and app lifetime management.
For more information, see. NET Core. An ASP. The server surfaces requests to the app as a set of request features composed into an HttpContext.
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