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ASP.NET INTERVIEW QUESTIONS

ASP.NET is an Open Source web framework for building fast and secure web applications and services with .Net. ASP.NET is also a most appealing cross-platform framework that can run on any operating system, allowing you to build your ASP.NET web applications using HTML, CSS, JavaScript, or Jquery.

The ASP.NET training and asp.net interview question answer pdf help you create a web API that can be used with other third-party resources such as Microsoft, Facebook, or Google.

1. What is ASP.NET?

ASP.NET Framework is part of .NET framework used to create dynamic websites, web application,s and web services. It is a server-side technology that employs all languages that are .NET compatible, including C#, VB.NET, J#, etc., compiled in Microsoft Intermediate Language (MSIL). ASP.NET uses server control to develop a fast and interactive application in an easy way.

All ASP.Net applications would also be written in multiple choice of .Net languages , which include C#, VB.Net, and J#, and it provides numerous development modes, which help in developing an application in an easy and better way.

ASP.NET Features:

● It uses VB.NET and C# languages to build the website.

● This allows us to separate the HTML layout with server-side code.

● This allows us to make the same class name qualify under a different namespace.

● ASP.NET pages are compiled, not interpreted.

ASP.NET is a query processing engine. It accepts incoming requests and routes them through a pipeline to an endpoint where programmers can add code to handle the requests.

2. What are the advantages of ASP.NET Core over ASP.NET Classic?

Cross-platform: The main advantage of ASP.NET Core is that it is not tied to a Windows operating system like the older ASP.NET framework. You can develop and run production-ready ASP.NET Core apps on Mac or Linux. Choosing an open-source operating system like Linux saves you significantly because you don't have to pay for Windows licenses. High performance: It is also designed from the ground up, with performance in mind. It is now one of the fastest web application frameworks.

Open Source: Finally, it is open-source and actively contributed by thousands of developers worldwide. All source code is hosted on GitHub for anyone to view, modify, and contribute.

This has resulted in significant goodwill and trust for Microsoft, despite the patches, bug fixes, and improvements added to the framework by global contributors.

New technologies: With ASP.NET Core, in addition to the conventional Model-View-Controller methodology, you may design apps using new technologies like Razor Pages and Blazor.

3. What are the different page events in ASP.NET?

Here are the page-level events in ASP.NET.

PreInit: This is the first event on a page that sets values , such as a master page.

2. Init: This event fires after each control initializes. You can use this event to change the initialized value of rules.

3. InitComplete: This event is raised after all initializations of a page, and its controls are Complete.

4.PreLoad: This event fires before the view state of a page and its controls are loaded and before the postback of the page is processed. This event is useful when you need to write code after page initialization.

5. Load(PageLoad): The page load event is typically used to verify the postback and then set control properties appropriately. After this event, the child controls load event is called.

6.ControlEvents(Postback): This event is called when a page or its controls cause a postback, such as ButtonClick event, SelectedIndexChanged event, CheckedChanged events, etc.

7.LoadComplete: During this event, all controls are loaded even after further processing can be done here.

8.PreRender: This event occurs before the view state is saved. It also allows final modifications to the page or its control.

9.SaveStateComplete: Any changes made to the page's controls are discarded here. This event is helpful if you must write a process requiring the definition of the display state.

10. Render: its not an event. Its a method of a page object and its checks. At this point, the controls are rendered in HTML, DHTML, and client-side scripting for the browser.

11. Unload: This event is used to clean up code. You can use it to unload resources manually.

4. What are server controls in ASP.NET?

ASP.NET server controls are objects on ASP.NET pages that run when the web page is requested. Many server controls, such as buttons and text boxes, are similar to HTML controls. In addition to HTML controls, many controls include complex behavior, such as controls used to connect to data sources and display data.

6. What is the difference between Hyperlink and LinkButton?

The hyperlink control does not have Click and Command events, whereas the LinkButton control has these events, which can be handled in the web pages code-behind file.

7. How many navigation controls are there in ASP.NET?

There are three navigation controls in ASP.NET.

● SiteMapPath

● Menu

● tree structure

8. When do you choose ASP.NET Classic over ASP.NET Core?

While its a better choice in almost every way, you don’t need to upgrade to ASP.NET Core if you’re maintaining a legacy ASP.NET application that you’re happy with and that's no longer actively developed. This is one of the common asp.net interview questions and Answers.

A better option is ASP.NET MVC if you:

● You dont need cross-platform support for your web application.

● I need a stable environment to work in.

● Have closer release schedules.

● Already working on an existing application and extending its functionality.

● Already have a team in place with ASP.NET knowledge.

9. What is the difference between client-side and server-side validations?

Client-side validations work on the client side using scripting languages such as JavaScript, jQuery, and VBScript. On the other hand, server-side validations work on the server side using programming languages like C#, VB, F#, etc. When you submit or send data to the server, server validations take effect.

10. What are globalization and localization?

Globalization is the process of designing and developing an app that works for multiple cultures or locations. In other words, globalization is creating and developing an application so that users from various cultures can use it. Globalization makes your application ready for international markets. This process involves:

● Identify the culture and locale that the application should support.

● Design features to support those cultures and locations.

● Write code that works equally well with all supported cultures and places.

Localization is customizing your app for a given locale or culture. In other words, localization

is customizing your app to behave according to your current culture or locale. Typically,

localization translates your applications user interface into the contemporary culture or Locale.

Conclusion

There are several asp.net interview questions that one needs to follow if one is trying to get a job. To know more about asp, you can go for the asp.net tutorial. Well, some of these questions are for freshers, and others for experienced ones as well. All one needs to do is clear some concepts, which will be enough.

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