Top 80 Net Interview Questions & Answers

It is a set of instructions that is independent of the platform and is generated by a language-specific compiler from the source code. HTML Helper Class checks the controls at compile time and ensures that HTML controls get rendered correctly. HTML Helper has a set of methods which returns HTML strings. C# is a type-safe, managed and object oriented language, which is compiled by .Net framework for generating intermediate language . Inheritance is a concept of object-oriented Programming language. It allows you to define a base class that provides a specific functionality, and it will enable other derived classes to inherit the base class or override the base class. developer interview questions

An application has only one Route Table and this is set up in the Global.asax file of the application. Sometimes we want to perform logic either before an action method is called or after an action method runs. We can change the action method name by using “ActionName” attribute. It is a collection of tools that contains HTML and CSS-based design templates along with JavaScript to create a responsive design for web applications.

The session helps us to maintain data and state throughout the application. Immutable means the value that is assigned to a string object is never changed. Unboxing is a process of extracting the value type from an object type. We have researched on .Net and noted the most frequently asked .Net Interview Questions and Answers. Minification is a technique to remove unnecessary data from the JS and CSS file without changing its functionality.

TempData is used when the data is to be used in two consecutive requests, this could be between the actions or between the controllers. Array stores the values or elements of same data type but arraylist stores values of different datatypes. Best of luck with your .Net interview, and I hope our .Net Interview questions and answers were of some help to you.

Now the Garbage collection has to free up the space allocated to the object when it is unused. A .Net framework is a software developed by Microsoft to run primarily on Microsoft windows. An extensive class library called Framework class library is included. Submitted questions and answers are subjecct to review and editing,and may or may not be selected for posting, at the sole discretion of Knowledgehut.

Routing is a pattern matching mechanism of the incoming request to the URL pattern which is registered into route table and figure out what to do with the request. Caching is a technique used to increase performance by keeping frequently accessed data or files in memory. The request for a cached file/data will be accessed freelance asp developers from cache instead of actual location of that file. The method used to enforce garbage collection in the system. IL in .Net means Intermediate language., All the DotNet source code is first compiled to IL, later IL is converted into machine language. You cannot change the index of the primary key of the table.

Define Memory

There are two state management methods in ASP.NET. HTML Server controls are standard HTML controls used to enable Server-side processing. PostBack in ASP.NET is a name given to the process that submits an ASP.NET page to the Server.

It is a powerful means of separation of concern through which the maintenance and testing of the application becomes easy. Dependency Resolver again has been introduced in MVC3 and it is greatly simplified the use of dependency injection in your applications. This turn to be easier and useful for decoupling the application components and making them easier to test and more configurable. The adapter used to get the data from an access database is OleDbDataAdapter. Cost is involved in serializing and deserializing session data. The Model- It is related to all logical data that the user works with.

As shown in below code example “CustomerList” action method can only be invoked by “HttpGet”. If we try to make Http post on “CustomerList” it will throw an error. To achieve this we require to make two entries with different key names and specify the same controller and action name. developer interview questions

This has increased the demand for skilled MVC developers to create appealing, fast, and secure web applications. According to Neuvoo, the average ASP.NET MVC Developer salary in the USA is $110,000 per year or $56.41 per hour. Entry-level positions start at $70,000 per year while most experienced workers make up to $187,000 per year. When an application starts for the first time, it registers patterns to the Route Table.

Name The Method Used To Enforce Garbage Collection In Net?

Cashing in .Net is a technique of storing frequently used data or information in memory. Whenever the same data or information is needed, it can directly retrieve from the memory. Needs to review the security of your connection before proceeding.

If you are looking for a job in the Salesforce area, then you can check out our Salesforce Interview Questions. Web forms in ASP.Net Is a web application framework, and it is one of the programming models supported by ASP.NET technology. Fragment caching is a caching type, which refers to the caching of individual user controls within a web form. It is useful when you want to cache only a subset of the page.

  • Web controls are the controls used for structural controls such as security, data validation, creating master pages, and data manipulation.
  • Here the XML is used to encode all the information to a web service.
  • By using the MVC framework we can design pluggable and extensible components which can be replaced or customized easier than Web Forms.
  • It is used to retrieve data from different sources.
  • Web forms in ASP.Net Is a web application framework, and it is one of the programming models supported by ASP.NET technology.
  • Garbage collection is the feature of the .Net framework.
  • Needs to review the security of your connection before proceeding.

Such URL patterns are difficult to achieve using convention-based routing and it will take extra efforts. There are different Types of action results in ASP.NET MVC. Each result has a different type of result format to view page. The ViewDataDictionary class is like a regular key/value collection and is accessed through the ViewData property of the Controller class. It is responsible to display the data received from the controller. This is a template to dynamically generate HTML which transforms the Model into UI.

Name The Adapter Used To Get The Data From An Access Database?

A .Net web service is defined as a software program intended to use XML to exchange information with other software through standard internet protocols. In simple terms, web services provide a path to interact with objects over the internet. To restrict the type of HTTP calls to GET or POST only we require to decorate the MVC action by “HttpGet” or “HttpPost” attribute. Below is the sequence of events that happen every time an HTTP request is handled by our application. Instead of fetching all resources one by one, we create a bundle and fetch that bundle in a single request. This tells MVC to redirect to specified action instead of rendering HTML.

Asax in .Net is an optional file used for handling high-level application events, like Application-start, Application-end, Session-end, Session Start, etc. Asax file is stored in the root directory of the .Net application. MSIL, i.e., Microsoft Intermediate Language, the compiler converts the source code into MSIL during the compilation. It is a set of independent CPU instructions which can be efficiently converted into native code. Boxing is a mechanism of converting a value type to an object type or any interface type. When a CLR boxes a value type, the value inside the system is wrapped.

When convention-based routing is complex to support certain URL patterns. We generally spend more time to write the code for the CRUD operations like connect the database and write create, retrieve, update and delete code. If we do not want a public method to be an action method, we use the “NonActionAttribute” attribute. If redirection occurs then viewdata and ViewBag values become null. The Razor view was introduced with ASP.NET MVC 3 and is the default view engine moving forward. developer interview questions

Actions are the methods in Controller class which is responsible for returning the view or json data. Action will mainly have return type — “ActionResult” and it will be invoked from method — “InvokeAction()” called by controller. Memory-mapped files map the content or data of the file to the logical address of the application. Memory maps enable you to run multiple processes on the same machine by sharing data with each other. The method MemoryMappedFile.CreateFromFiles to obtain a memory-mapped object.

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The data elements include strings, integers, characters, or other data types. Garbage collection is the feature of the .Net framework. The GCmanages your application’s release and allocation of memory. Whenever you create a new object, the CLR allocates the memory for the item from the heap.

GAC, i.e., Global Assembly Cache, is a Windows directory folder to store the .Net assemblies and are designated to be shared by all the executing applications on the system. In simple terms, assemblies are shared among multiple applications, on a machine, by registering to GAC. Just In Time compiler, known as JIT, is a part of CLR in .Net, which aids in managing the execution of .Net programs irrespective of the .Net programming language. JIT is responsible for converting MSIL or CIL into machine code. Apart from that, the interviewer checks your communication skills and confidence levels. So, have confidence in yourself and just read topics that you are not comfortable with.

Explain The Difference Between Server Transfer And Response Redirect?

LINQ, i.e., Language Integrated Query, is a name given to the set of technologies that are based on the integration query capabilities into the c# language directly. It is used to retrieve data from different sources. In the .Net framework, a tuple is defined as a data structure that contains a sequence of elements of different data types.

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PostBack is performed to check specific credentials of the page, such as user name and password verification. A web service is a tiny piece of software that makes it available over the internet, and it makes use of a standard XML messaging system. Here the XML is used to encode all the information to a web service. Cross-page posting is useful when you want to post data to another or different page, and you do not want to reload the current page. In simple terms, the cross-page posting is defined as submitting a form to a separate page. It is a virtual machine component of the Microsoft .Net Framework, which manages the execution of the .Net programs.

ViewResult – Returns a ViewResult which renders the specified or default to the response. ViewModel can have specific validation rules using data annotations. ViewData is similar to ViewBag but is implemented using ViewDataDictionary class rather than a dynamic object. By using the MVC framework we can design pluggable and extensible components which can be replaced or customized easier than Web Forms.

These ASP.NET MVC interview questions and answers will definitely help you to crack your ASP.NET MVC interview successfully. All public methods of a controller class are treated as the action method. Do you have any planned ASP.Net MVC interview in the coming days? This guide on ASP.NET MVC interview questions prepared by our team of experts will help you excel in your ASP.NET MVC interviews. This is achieved by decorating the controllers or actions with ASP.NET MVC attributes or custom attributes. An attribute or custom attribute implements the ASP.NET MVC filters and can contain a piece of code or logic which we want to execute before or after the action method call.

One of the vital features of inheritance is the ability to reuse the code. If you have 3 years of experience, you don’t have to prepare much expect going through the interviews questions and answers and revising basic concepts. Today, ASP.NET MVC framework has occupied the web market replacing many competing frameworks with it.

ASP.NET is defined as an open-source, Server-side web application framework to give dynamic web pages. RedirectPermanent is a method in ASP.NET that performs the same redirect as the response method. RedirectPermanent() is a new method of Response(). Web controls are the controls used for structural controls such as security, data validation, creating master pages, and data manipulation.