Top 43 ASP NET Interview Questions 2023

• 01 November 2021
• by: Admin
• in: Education
• note: no comments

Scenario or problem-solving questions should involve asking for sample code for a programming problem using a specific technology in dotNET. This is a programming feature included in ASP.NET that can best implement user authorization and authentication in ASP.NET web applications. ASP..NET Core Identity is .net mvc developer a customizable way to manage multiple user accounts and enforce access control in web applications. It also supports many authentication providers such as social media and enterprise identity. Session state in ASP.NET Core allows developers to store and retrieve user-specific data across multiple requests.

• Visual Studio 2013 includes pre-installed code generators for MVC and Web API projects.
• The lifetime needs to be the same as the requests do not live long.
• Developers can manage configuration settings in .NET Core using various sources, such as JSON files, environment variables, command-line arguments, or Azure Key Vault.

Contains Classes such as FilterConfig, RoutesConfig, WebApiConfig. This class contains the default format of the url that should be supplied in the browser to navigate to a specified page. There are the following approach which is used to connect with database to application. The ValidationSummary can be used to display all the error messages for all the fields. The following figure shows how ValidationSummary displays the error messages.

What do you understand by Model Binding?

A controller method can also return the partial view directly. Visual Studio 2013 includes pre-installed code generators for MVC and Web API projects. You add scaffolding to your project when you want to quickly add code that interacts with data models. ASP.NET Scaffolding is a code generation framework for ASP.NET Web applications. In MVC, controllers define action methods and these action methods generally have a one-to-one relationship with UI controls such as clicking a button or a link, etc. For example, in one of our previous examples, the UserController class contained methods UserAdd, UserDelete, etc.

If we want “TempData” to be read and also available in the subsequent request then after reading we need to call “Keep” method as shown in the code below. https://remotemode.net/ ViewBag is also used to pass data from the controller to the respective view. It represents the user interface, with which the end-users communicates.

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The RedirectPermanent(String) method overload gives a 301 HTTP status code in the reaction and incorporates the URL to divert the request. A 301 HTTP status code is a standard code in an HTTP reaction. It shows that a lasting redirection exists, and it gives the redirection area. If we set it to Redirect then we must set another property LogOutPage Url which a user is redirected to after logging out of the website. Compared to GridView and DataList control, Repeater has limited features.

• Secondly, dotNET interviews should be designed to reveal a candidate’s depth of understanding of .NET.
• These are called scaffold templates as they allow us to build a functional data-driven website quickly.
• It creates a list of records from the model collection along with the delete link with delete record.
• The technical interview can include several technical questions or scenarios and problem-solving tests.
• It indicates whether more than one instance of the error filter attribute can be specified.

The “view” contains code defining the user interface or front end of the web application. The controller contains code that deals with user input, data access, and manipulation. ASP.NET (Active Server Pages . NET) is a progressive new programming framework that empowers the rapid improvement of powerful web applications and administrations. Interviewing .NET candidates commonly consists of basic and advanced questions to assess technical ability. We sourced these questions from the .NET community based on developers’ own interview experience and what our clients found important to ask.

Discuss Blazor and its role in .NET development

Scaffolding is a code generation framework for ASP.NET Web applications. Visual Studio includes pre-installed code generators for MVC and Web API projects. You add scaffolding to your project when you want to quickly add the code that interacts with data models. Using scaffolding can reduce the amount of time to develop standard data operations in your project. It consists of page templates, entity page templates, field page templates, and filter templates. These templates are called Scaffold templates and they allow you to quickly build a functional data-driven Website.

Models are usually used to transfer data back and forth between controllers and views. Some people also use them for wrapping business logic, sharing the model with an ORM tool. Moreover, using areas, multiple developers can work on the same web application project. The Controller (application logic) chooses the View (user-interface) to display and provides it with the Model (data). The View (user-interface) renders the final page, based on the data in the Model. Routing determines how incoming HTTP requests are matched to specific actions or endpoints a web application created with ASP.NET Core.

You can configure the request delegates through the ‘Run’ , ‘Map’ , and ‘Use’ method on IApplicationBuilder. You can set the order of middleware execution in the request pipeline. Each middleware adds or modifies http request and optionally passes control to the next middleware component. With ASP.NET Core , it is now possible to cache the data within the application. In-memory cache is the simplest way of caching by ASP.NET Core that stores the data in memory on web server. It is a service that you can incorporate into your application using dependency injection.

Cross-origin resource sharing (CORS) in ASP.NET Core enables devs to to specify which domains are allowed to make requests to an application. This ensures requests from other domains are handled securely. In .NET Core Synchronous programming executes code sequentially thus blocking the execution until the current operation is completed.