.Net MVC Interview Questions and Answers

What’s MVC?

MVC (Model read Controller) is one of the software package branches of knowledge patterns that is made on three layers- Model layer, read layer and Controller layer. MVC could be a pattern that essentially talks regarding the separation of concern for a project wherever every layer is separate with no dependency. Here the three layers have their roles:

Model – it’s used because of the information instrumentation. Primarily we tend to write the general public properties underneath this layer. Properties area unit the information carrier to cater the information from one layer to a different layer.

E.g. public string Full Name

It is not a great application to jot down the business logic here therefore we should always keep avoiding the business rules, functions, logic during this layer, etc.

Read – it’s primarily the UI (User Interface) half that is that the main application designed mistreatment the net technologies like ASP.Net etc. It consists of the computer program style, illustration of the knowledge for the top users, etc.

Controller – it’s the treater between the read and Model and accustomed management of the requests and responses floating through the views and Model. The command, Actions, and Events area unit is part of the Controller in MVC. All the communication is completed via the Controller therefore we will say that the Controller is the heart of MVC.

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What’s ASP.Net MVC?

ASP.Net MVC is that the Microsoft product supports the core MVC pattern. Microsoft has taken the core thought of MVC and Designed the ASP.Net MVC structure for Visual Studio that helps the developers to induce the automatic structure and thereon, they’ll design the applications.

ASP.Net MVC provides the structure with the separation of considerations wherever every a part of the ASP.Net MVC application is separate and has no link among them. Except for the separation of considerations, the Microsoft has provided the thanks to communicate between the separate parts by mistreatment the opposite further logic and libraries. These libraries support the affiliation and communication between the parts, databases and different external parts yet with tiny effort.

How ASP.Net MVC is completely different than MVC?

ASP.Net MVC is the heritable style of Core MVC wherever Microsoft has designed their MVC patterns supporting the initial core MVC thought. Microsoft additionally provided the new MVC structure (ASP.Net MVC) that has the intrinsic capabilities of communication with their parts, reference to the information, etc. The ASP.Net MVC has great support for making mobile applications. We will produce the Mobile applications in ASP.Net MVC mistreatment the predefined templet.

What units are the new options of ASP.Net MVC 2?

There are a unit few major changes that happened within the version MVC2. Microsoft has a lot of targeting the hypertext mark-up language Helpers, Validations support, Async controllers, etc.

Below are a unit few points that distinguish the ASP.Net MVC two completely different than the previous versions:

1. New hypertext mark-up language Helpers with powerfully typewritten
2. Model based mostly validations- this is often a helpful feature wherever the validation is completed within the Model and can be used throughout the appliance.
3. The automatic staging feature was additionally introduced with this version.
4. Asynchronous controller support that permits multiple tasks to run at the same time.
5. Html. Render Action was introduced to render the section/part of the page.

What are the new options of ASP.Net MVC 3?

1. system choice for the quickening method
2. Razor engine with the new razor syntax permanently readability of the read code.
3. hypertext mark up language five support
4. Model-based mostly validations
5. Model Binders to bind the model with reading
6. Action filters
7. Nuget enabled
8. Output caching for partial page

What are the new options of ASP.Net MVC 4?

1. Mobile support by adding a brand new Mobile Project model
2. ASP.net internet API side for the hypertext transfer protocol requests
3. Task category support with Async ways
4. Bundling and Magnification
5. Login with the social networking websites
6. Support of Windows Azure SDK
7. show modes for the webpage and mobile layout page

What are the new options of ASP.Net MVC 5?

Below are the new options of ASP.Net MVC 5:

1. One ASP.Net for all sorts of internet templates
2. Bootstrap enabled for the ASP.net MVC 5
3. New Authentication Filter for Controller/Controllers
4. Attribute Routing
5. New system choice
6. Filter overrides feature

Justify ASP.Net MVC application life cycle?

The application life cycle of ASP.net MVC includes the request, processing, filtering, and execution then finally the response back to the requester. The request 1st goes to the uniform resource locator routing module (HTTP Module) and there it gets set whether or not this can be an MVC request and can be handled or not. currently, if the request is for an MVC application, the uniform resource locator routing module selects the primary route that satisfies the requested uniform resource locator. Presently because the 1st match found for the requested uniform resource locator, the method for the execution begins with the Controller and Model (if any), and therefore the response is sent back to the browser.

What benefits of the MVC Framework?

Below are the benefits of the MVC framework:

Separation of considerations

Light-weight weight

No trip for the layers

Decoupling between the layers

No dependencies between the Model, read, and Controller

What does one mean by Separation of Concerns?

Separation of considerations means that all the 3 elements (Model, read, and Controller) aren’t dependent on every alternative. We can have one controller that might serve the request and might use any range of Views to populate.

Wherever can we see the Separation of considerations in MVC?

we can see the separation of concern after we add/remove a View; it’ll not impact the remainder of the application as a result of it all depends on your decision, then solely it’ll be used. If there’s no implied read, the application will simply keep the read or model with no dependencies.

What’s Razor Read Engine in ASP.Net MVC 3?

Razor read engine is the new engine that Microsoft has introduced with the ASP.Net MVC 3. Therefore from ASP.net MVC three onward, we can see the ASP.net MVC application can support ASPX further as a Razor read engine. Therefore after we use .aspx to develop our Views, it’ll use the ASPX engine to execute and after we use the Razor Views (.cshtml or .vbhtml), then it’ll use the Razor read engine to execute them.

Justify the benefits of victimization routing in ASP.NET MVC?

There are several benefits of the victimization routing mechanism in ASP.Net MVC:

1. to keep the uniform resource locator clean- as in MVC, the default format for the uniform resource locator is “http://www.myweb.com/Customer/GetCustomer/10”. This uniform resource locator shows that GetCustomer can offer the client details for the id as ten.
2. Discovering the uniform resource locator by finish User- the top user will simply discover the uniform resource locator details on top of the uniform resource locator, the top user will discover that this uniform resource locator can offer the client details for the client ID ten.
3. Avoiding the info IDs in URL- with this, {we can we will we can} avoid the IDs that are outlined within the info.

Is ASP.Net MVC appropriate for each Windows and net applications?

No, ASP.Net MVC is primarily created for net Applications development. For the Windows Application, MVP is best suited.

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What area unit the advantages of victimisation ASP.Net MVC?

The foremost edges victimisation ASP.Net MVC are:

1. Separation of concern- separate code behind file
2. automatic testing – testing of the logic with no UI

What’s the newest version of ASP.Net MVC

This version of ASP.Net MVC is six. This version of ASP.Net MVC additionally referred to as ASP V-Next is the common framework for developing MVC, Web Pages, Web API, and Signal R applications. Additionally, it may be self-hosted and not depend on IIS for hosting.

What’s the distinction between every version of ASP.Net MVC?

Below square measure the options in every version in ASP.Net MVC:

ASP.Net MVC 2

1. Async Controller
2. Default Value Attribute in Action Technique
3. space construct
4. Bind binary information with the Model binder
5. Model based mostly validations
6. Data Annotations support
7. Html.Validation Summary helper technique

ASP.Net MVC 3

1. Razor syntax and Razor engine
2. Support for HTML five
3. Automatic templates out there for the production, List, Edit, read via staging

ASP.Net MVC 4

1. internet API introduction underneath ASP.Net MVC
2. Mobile project templates
3. Bundling & Magnification
4. Task support for Asynchronous controller
5. Azure SDK
6. modify login exploitation third-party sites like Facebook, Google, Twitter, etc by OAuth & Open Id

ASP.Net MVC 5

1. Attribute based mostly routing
2. One ASP.Net
3. Bootstrap in MVC Templates auto-enabled
4. Authentication Filters
5. Filter Overrides

ASP.Net MVC 6

1. Merging of ASP.Net MVC and Internet API
2. integral DI (Dependency Injection)
3. JSON based mostly project structure (Added JSON)
4. Nu gets package based mostly
5. Auto-build by save exploitation Roslyn compiler.
6. Open supply (Runs on Mono, UNIX & Mac)

What square measure HTML helpers in MVC?

To render HTML controls in sight, HTML Helpers square measure is used.

e.g. Html.Text Box (“Address”)

What’s the distinction between “HTML.Text Box” vs. “HTML .Text Box For” in ASP.Net MVC?

each of the “HTML.Text Box” and “HTML .Text Box For” can turn out an equivalent output however the “HTML .Text Box For” is powerfully written whereas “HTML.Text Box” is feebly written.

e.g. Html.Text Box (“Address”) // feeble kind

It will offer an equivalent output as

e.g. HTML.Text  Box For(x => x .Address) // powerfully kind

What’s routing in MVC?

Routing in MVC is employed to outline the computer address structure. It additionally maps the computer address to the controller and Action technique. For a lot of details, attend to the alphabetic character.15

Wherever is that the route mapping code written?

Route Config .cs is the file wherever the route is designed. For a lot of details, attend to the alphabetic character.15

Will we tend to map multiple URLs to an equivalent action?

Yes, we can map the multiple URLs to an equivalent action technique.

However, will we tend to navigate from one read to an alternative read employing a hyperlink?

Simply, we can use the Action Link technique and [provide the controller and action technique because of the parameters. e.g.

Html.Action Link (“Home”, “Index”)

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