Asp Net Developers Interview Questions And Answers You Must Know

You should not inject the service via constructor injection as it treats the service behavior like Singleton. Transient – Services with transient lifetime are created each time they are requested from service container. So it’s best suited for stateless, https://globalcloudteam.com/ light weight services. Configure method is used to add middleware components to the IApplicationBuilder instance that’s available in Configure method. Configure method also specifies how the app responds to HTTP request and response.

In .NET, an object occurs when a developer creates a class. The class defines an object based on its characteristics, functions, properties and methods for use. Developers compile code for .NET in the coding languages of C# or VB .NET that then translates into other coding languages so the computer can execute it in CLR . Apps running on multiple server should ensure that sessions are sticky if they are using in-memory cache.

Dev Leaders Share Their Favorite Asp Net Interview Questions

Local and global resources records will appear to be identical, so the only distinction is the folder they reside in. Warn() – Writes trace information, along with optional exception data, to the trace log. The first form writes trace information to the trace log including any user-defined categories. Caching increases the performance parameter if the same data or information is requested by the user. Now, stage 3 is known as a page postback, while stages 3 and 4 are aggregately known as a “roundtrip”. We can say that- “A roundtrip includes making a total excursion over the network to the Web browser and getting the reaction back.

Response.Redirect is used to redirect the user’s browser to another page or site. It performs trip back to the client where the client’s browser is redirected to the new page. The user’s browser history list is updated to reflect the new address. In Server.Transfer page processing freelance asp developers transfers from one page to the other page without making a round-trip back to the client’s browser. This provides a faster response with a little less overhead on the server. The clients url history list or current url Server does not update in case of Server.Transfer.

Starting of page life cycle At this stage, the Request and Response objects are set. If the request is an old request or post back, the IsPostBack property of the page is set to true. In ASP.NET authentication means to identify the user or in other words it’s nothing but validating that he exists in your database and he is the proper user. Authorization means does he have access to a particular resource on the IIS website. A resource can be an ASP.NET web page, media files , compressed file etc. So, any application that understands XML-regardless of the application’s programming language or platform-has the ability to format XML in a variety of ways (well-formed or valid).

Question 45

The advantage of this is that managed code is platform-independent because it runs in the CLR rather than the operating system of the machine accessing the application. Web services communicate by using standard web protocols and data formats — including HTTP, XML and SOAP — allowing them to connect across different platforms and programming languages. The .NET Framework provides built-in classes for building and consuming web services. A web service is a reusable component that developers can use to make their application accessible over the internet and interactive with other online applications or programs.

In passport authentication, it is first checked if there is any passport authentication cookie. If the cookie is not available, then the application redirects to a passport sign-on page. After all, necessary data is given; the passport service authenticates the details of the user. If they are valid, the details are stored on the client machine; and finally, redirect the user to the requested page.

This event can be handled by overloading the OnLoad method or creating a Page_Load handler. PreLoad PreLoad occurs before the post back data is loaded in the controls. This event can be handled by overloading the OnPreLoad method or creating a Page_PreLoad handler. Page rendering At this stage, view state for the page and all controls are saved. The page calls the Render method for each control and the output of rendering is written to the OutputStream class of the Page’s Response property. You can use any standard text editor or XML parser to create and edit ASP.NET configuration files.

CAS can only be used for managed code, so it will go through checks each time an assembly tries to access the resources. This framework has evolved to .NET Core, a newer version of the .NET framework. It has been created as a general-purpose, free, and open-source development platform. It is a cross-platform framework and therefore is able to run any given application on different operating systems like Windows, Linux, or macOS. Another advantage of .NET core is that can be used to develop applications like cloud, games, IoT, machine learning, microservices, mobile, web, etc. with easy.

PostBack is done if certain credentials of the page are to be checked against certain sources, (for example, confirmation of username and secret key/password using a database). This is something that a client machine can not able to achieve and subsequently, these details must be ‘posted back’ on the server. So we can say that a postback event occurs on the client-side but is handled by the code in a copy of the page running on the server. A configuration file (web.config) is utilized to oversee different settings that characterize a website.

Developers should prepare for this by developing real apps, which will definitely have errors that need to be gracefully handled. In lieu of that, understanding the basics of error handling would suffice. Christian Duvall is the Group Vice President of Enterprise Services forWorkstate, where he leads the Identity and Access Management practice. Christian has over fifteen years of experience providing strategic leadership, architecture, and execution of complex technical projects for companies ranging from Fortune 500 to start-ups.

It also lets developers edit JSON feeds on other websites and implement them quickly. JSON helps developers define classes that use elements from JSON text as well. You can access additional settings by using options pattern instead of directly injecting IConfiguration inside the controller. Attribute Routing gives you more control over the URIs in your web application.

Interview Questions And Asp Net

This question might be asked when the interviewer wants to know if you have used routing enough to know when it is not implemented in MVC. Jenn, an Indeed Career Coach, breaks down the intentions behind employer’s questions and shares strategies for crafting strong responses. In HtmlInputCheckBoxcontrol, multiple item selection is possible whereas in HtmlInputRadioButton controls, we can select only single item from the group of items.

In ‘web.config’ file set the authentication mode to ‘Windows’ as shown in the below code snippets. If Authentication is successful it will return a token to your website. In this methodology ASP.NET web pages will use local windows users and groups to authenticate and authorize resources. Then create a situation where you explain a task and action for both types of code.

ASP.NET MVC allows only one model to be bound to each view, but there are several workarounds for this. Candidates may discuss some or all of these solutions when answering. For example, the ASP.NET framework includes the class ExpandoObject, which is a dynamic model that can be passed to the view. ASP.NET is used to create dynamic web applications; while ASP is Microsoft’s server-side technology just to create web pages. In App_Code folder we can have source code from different languages by creating sub directory inside the app_Code folder.

• The ability to break a potentially complicated topic down into a simple conversation is essential.
• It also supports open source implementation of other technology.
• We can not call or use a single copy of this control in different applications.
• You can manage resource hierarchies in better way using attribute based routing.
• Controller — The components that deal with user interactions, such as keyboard input.
• A control draws itself on the form and can be placed inside the form area.
• Most of these methods provide the basic implementation required of any type that a developer will work with in the .NET stack.

An request delegate can be a in-line as an anonymous method (called in-line middleware) or a reusable class. These classes or in-line methods are called middleware components. ASP.NET Core comes with a built-in Dependency Injection framework that makes configured services available throughout the application. You can configure the services inside the ConfigureServices method as below. You can configure the services and middleware components without the Startup class and it’s methods, by defining this configuration inside the Program class in CreateHostBuilder method. Toptal is a marketplace featuring the top 3% of freelance developers with expertise in various programming languages.

What Are Client

Solution Explorer displays the folder and files of a project that appears on a physical hard drive. VB.NET is a modern object-oriented programming language developed by Microsoft to combine the features of CLR and .NET. C-Sharp is a programming language developed by Microsoft that runs on the .NET framework.

What Languages Does The Net Framework Support?

You can use the aspnet_compiler.exe to precompile a site. This process builds each page in your web application into a single application DLL and some placeholder files. When set to true, this property instructs the client application not to save the Cookie on the hard disk of the user at the end of the session. Web config file is specific to web application whereas Machine config file is specific to machine or server.

ASP.NET Core was first delivered in 2016 and is a re-plan of prior Windows-just forms of ASP.NET. The RedirectPermanent 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. Once we created a single copy of this control, we can use this copy to different projects as well.

Asp Net Core Mvc Interview Questions

You can add services as constructor parameters, ASP.NET Core runtime will resolve these dependencies from the service container. Options Pattern allow you to access related configuration settings in Strongly typed way using some classes. When you are accessing the configuration settings with the isolated classes, The app should adhere these two principles.

In development environment appsettings.Development.json file values override the appsettings.json file values, same apply to production environment. Default configuration provider first load the values from appsettings.json and then from appsettings.Environment.json file. Request delegates handle each HTTP request and are used to build request pipeline. It can configured using Run, Map and Use extension methods.

When answering this question, prepare for any follow-up questions about protecting computers against risks. Security is important so you may be asked about specific risks. It’s a function that provides an environment to execute commands.

Model — The data domain of the application, normally an actual SQL database. During this stage, the ASP.NET developer handles specific control events, such as the TextChanged event in the TextBox control or the Click event in the Button control. The session object is used to maintain the session of each user. A session id is generated if a user enters in the application and when the user leaves the application, the session id is automatically deleted.

Devskiller provides software based real-world IT tests for hiring developers. Server.Transfer sends information from one web request to another, all on the server side. A response is not sent to the browser to cause the change. On the other hand,Response.Redirect sends an HTTP 302 message to the browser and causes a redirect in the browser.

Postback event handling If the request is a postback , the related event handler is called. Easy and simple control with https features such as Caching, Versioning, request/response headers and its various content formats. Proper Globalization Your application should be able to Accept, Verify, and Display all kinds of global data. It should well also be able to operate over this data, accordingly. WSDL- Offers a uniform method of describing web services to other programs.