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The role of the ASP.NET application developer is in high demand now, as more companies look to gain a competitive advantage through better software programming. But before the vacancy is posted, two things should be kept in mind:

First, because their skills are in high demand, ASP.NET experts can afford to be picky about the companies they work for, the projects they take on, and the compensation they will accept. Second, don't overlook talented but less experienced professionals who could be the right app developer if given the necessary training, such as a class in ASP.NET Core MVC 5 or a video tutorial on Angular 2.

To ensure that you hire a qualified ASP.NET application developer for your organization, and show potential employees that you appreciate the nuances of their technology specialization, consider asking some of these technical questions during the interview process:

  • What are the advantages and Cons of user controls and custom controls in asp.net?

This question addresses two key areas: the knowledge of the interviewees and their approach to ASP.NET application design. It is important not to focus too much on objective questions whose answers can easily be found online. Assessing the ability of candidates to apply what they have learned is much more beneficial. Some main differences between user and custom controls:

User controls are more comfortable to create but give limited support for customers using visual design tools. They are best suited for static designs.

Custom controls take longer to build but offer full support for visual design tools. They are good for a dynamic layout.

  • What are some of the page events in the lifecycle of an ASP.NET page?

The lifecycle of an ASP.NET page travels through several different events as the page executes. This interview question is technical in nature applied for the ASP.NET developer, as it requires familiarity with the entire ASP.NET lifecycle, as well as the process of implementing and maintaining the correct code and controls for each stage. Common page events include:

PreInit, which occurs after the completion of the startup stage but before the initialization stage begins. Through this event, the developer can build dynamic controls, introduced the master page and theme part dynamically, and read the property values ​​from the profile.

InitComplete, which occurs towards the end of the initialization stage. During this event, changes to the ViewState can be applied after the next return.

Control events, which occur during the loading stage. During this stage, the ASP.NET developer handles specific control events, such as the TextChanged event on the TextBox control or the Click event on the Button control.

  • What versions of IIS have you worked with?

Internet Information Services (IIS) is an extensible web server that carries a quality of standard Microsoft transfer protocols. There are different variants of IIS, the current one is 10.0, which includes support for HTTP / 2, with a range of design settings and processing capabilities. The slow-changing nature of many enterprise web server systems means that a potential candidate may not have worked with the latest version of IIS in a previous position. This interview question helps ensure that your lead candidate has experience working with the version of IIS they use or sufficient familiarity with similar versions to make the transition.

  • How are CSRF attacks prevented?

Interview questions like this one will inform you about your ASP.NET candidates' experience with real-world applications and their understanding of security issues. A cross-site request forgery involves sending a false request from the user's browser to a web application. If the user has an active session, this request can be processed within the application.

In ASP.NET, such attacks can be easily prevented with authentication tokens. C # has the ValidateAntiForgeryToken attribute, which tracks a screen request by issuing a token. The token is returned with the request and the server-side validated, ensuring the request is genuine. If you wish, you can continue with additional questions about how ASP.NET handles other security concerns.

  • What is the difference between Stateful and Stateless?

This interview question covers some fundamental aspects of ASP.NET application development. The HTTP web protocol is stateless because it does not have built-in support for recording states. For example, it does not store information about what actions a user has performed during a session.

ASP.NET web forms tried to make stateful web applications with ViewState, which handled session cookies and session ids transparently. The state of the application was managed on the server. ASP.NET MVC is supposed stateless because it doesn't do server-side checks to keep state. Instead, the session is dynamically managed by the components of the model view controller.

Effective interview questions balance an assessment of insight with an understanding of the ASP.NET developer candidate framework. You can also ask about past projects that they are particularly proud of or what kind of work they would like to do in the future. Their answers to these questions help you better understand how they approach your ASP.NET coding career. In turn, you can show them that you are committed to matching the candidate's goals with your company's goals.

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