mvc interview questions codeproject

Explain the concept of View Model in MVC? But along with that you need to prepare your practical skills on ASP.NET MVC technology. This article does not teach Asp.net MVC step by step, it’s a last minute revision sheet before going for MVC interviews. So if “TempData” is once read it will not be available in the subsequent request. Scaffolding is a technique in which the MVC template helps to auto-generate CRUD code. We can decorate the MVC action with the HttpGet or HttpPost attribute to restrict the type of HTTP calls. The Controller is responsible for taking the end user request and loading the appropriate Model and View. Refreshed and modernized default project templates, Enhanced support for asynchronous methods, DefaultValueAttribute in Action-Method Parameters. The purpose of this article is to quickly brush up your MVC knowledge before you go for MVC interviews. Razor was introduced in MVC 3. Most popular ASP.NET MVC and related Online Courses The Complete ASP.NET MVC 5 Course. ASP.NET Web Forms uses Page controller pattern approach for rendering layout, whereas ASP.NET MVC uses Front controller approach. So we can convert the inline action filter to an action filter attribute. Action filters are basically custom classes that provide a means for adding pre-action or post-action behavior to controller actions. So to generate code using scaffolding technique we need to select one of the types of templates (leave the empty one). Many components of the three layered architecture are part of MVC. CodeProject Stuff; community lounge. In this post we will build our quiz application with an easy and simple approach. The problem with the inline action attribute is that it cannot be reused across controllers. Action filters are useful in the following scenarios: You can create action filters by two ways: To create an inline action attribute we need to implement the IActionFilter interface. When we bind a model with a view we use the model dropdown as shown in the below figure. What is Bundling and Minification in MVC? “What if we have want that on “Submit1” button click it should invoke “Action1” and on the “Submit2” button click it should invoke “Action2”.”. In this article, I list the top 50 MVC questions and their answers. By using the ActionLink method as shown in the below code. You can see the ViewLocationFormats is set to the Views folder and the extension is “.myview”. What are the benefits of using MVC? Is MVC suitable for both Windows and web applications? MVC Interview Questions that should be added. I already explained about request flow in ASP.NET MVC framework that request coming from client hits controller first. By using MVC pattern, we can develop applications that are more flexible to changes without affecting the other components of our application. If we can group controller classes in to logical section like “Invoicing” and “Accounting” that would make life easier and that’s what “Area” are meant to. Do not forget to watch my Learn step by step video series. This article does not teach Asp.net MVC step by step, it’s a last minute revision sheet before going for MVC interviews. WCF was brought into implement SOA, the intention was never to implement REST. Now that we have understood the question let us answer the question in a detailed manner. Click the Below link =>, Nice Que Ans, very use full and Easy to understand, thanks. please Install the app for quick reference. On the other hand, in ASP.NET MVC, a common controller for all pages processes the requests. Also, MVC supports automatic UI testing. Below is the detail explanation of the same. What is the difference between each version of MVC 2, 3 , 4, 5 and 6? Article from codeproject.com. Minification reduces the size of script and CSS files by removing blank spaces , comments etc. For every page you would like to reuse the left menu, header, and footer controls. In case you want to make AJAX calls on hyperlink clicks, you can use the Ajax.ActionLink function as shown in the below code. “Customer buying Level” is a color indicationwhich indicates how aggressive the customer is buying. So this is the concrete list of MVC Interview Questions. In case you want to use a regular expression, you can use the RegularExpression attribute. I hope it will be helpful for you. This article does not teach Asp.net MVC step by step, it’s a last minute revision sheet before going for MVC interviews. So writing parsing logic for that is very easy. How do you create a partial view and consume it? The end user thinking that it’s a game site clicks on the “Play the Ultimate Game” button and internally the malicious code does the money transfer process. Dear readers, these ASP.NET MVC Interview Questions have been designed specially to get you acquainted with the nature of questions you may encounter during your interview for the subject of ASP.NET MVC.As per my experience good interviewers hardly plan to ask any particular question during your interview, normally questions start with some basic concept of the subject and later they … The first step is to set the authentication mode equal to Forms. For example below is a simple customermodel object with “CustomerName” and “Amount” property. CSRF stands for Cross site request forgery. Once the partial view is created you can then call the partial view in the main view using the Html.RenderPartial method as shown in the below code snippet: One of the easiest ways of doing validation in MVC is by using data annotations. As we all know, Entity Framework is an enhancement This is done by using $.post. TempData is also a dictionary object that stays for the time of an HTTP Request. MVC Interview Questions With Answers - CodeProject - Free download as PDF File (.pdf), Text File (.txt) or read online for free. We had demand to consume data on HTTP from clients like mobile, JavaScript, Windows applications, etc. So in the binder we can write the mapping logic between the UI and the model. We can implement pre-processing logic or cancellation logic in these methods. T OP 50 ASP.NET MVC Interview Questions with Answers. When you implement bundling, minification is implemented by itself. For that it came up with something called Asp.net Web Forms. The below code needs to be put in the ASPX or Razor view. In order to pass data from controller to view and in next subsequent request, ASP.NET MVC framework provides different options i.e., ViewData, ViewBag and TempData. You can find complete details of ASP.NET MVC Routing here. The best place to register the custom view engine in the ViewEngines collection is the global.asax file. .NET Ajax AngularJS Angularjs 2 ASP.NET ASP.NET Core ASP.NET Interview Questions ASP.NET MVC ASP.NET Web API Bootstrap C# Cloud Computing CSS3 e-Commerce Electronics Entity Framework ExpressJS Game Development HTML 5 Interview Questions Java Javascript jQuery Magento MEAN Stack Misc Miscellanous Web Mobile App Development MongoDB NodeJs Online Courses … As the name says view model this class has the gel code or connection code which connects the view and the model. If you can share your question in the comment below. Great work! Display mode displays views depending on the device the user has logged in with. Once the controller responds, this data is displayed in the HTML DIV tag named DateDiv. For Windows authentication you need to modify the web.config file and set the authentication mode to Windows. WebAPI follows REST principles. Below is a summary table which shows the different mechanisms for persistence. If we can somehow combine all the JS files into a single bundle and request them as a single unit that would result in increased performance (see the next figure which has a single request). So if the request is the first request the first thing is to fill the route table with routes collection. Para leer el artículo original en inglés de Shivprasad koirala. Most Asked ASP.Net MVC 5 Interview Questions; What is MVC? Is MVC suitable for both windows and web application? Below is a detailed list for your interest: There 12 kinds of results in MVC, at the top is the ActionResult class which is a base class that can have 11 subtypes as listed below: ActionFilters help you to perform logic while an MVC action is executing or after an MVC action has executed. This form calls a controller action called getCustomer. 1) What is ASP.NET MVC? For instance you can see in the below code snippet the DisplayCustomer action can only be invoked by HttpGet. step by step MVC (Model View Controller) video series from YouTube. Nice, but one or more technical question not covered. Below is “Html.TextBoxFor” code which creates HTML textbox using the property name ‘CustomerCode” from object “m”. Heavy weight because of complicated WSDL structure. Routing helps you to define a URL structure and map the URL with the controller. Request flow for ASP.NET MVC framework is as follows: Request hits the controller coming from client. Now let’s say the user has logged in to the genuine bank site and the attacker sent this forged game link to his email. “TxtAmount” textbox takes data from “Amount” property of model as it is. In ASP.NET MVC, we have many built-in ActionResults type: For a complete list of available ActionResults types with Helper methods, please click here. Hi, that's really massive list of the questions. To display the above error in view we can use the below code. Forms authentication is implemented the same way as in ASP.NET. If you understand following key concepts, you will definitely feel more comfortable during an interview. So now henceforth when any untrusted source send a request to the server it would give the below forgery error. Web projects always need CSS and script files. The more shortcut way of achieving the same is by using “Peek”. If we have multiple filters, what’s the sequence for execution? Image Courtesy: - http://www.dotnetinterviewquestions.in/article_explain-mvc-application-life-cycle_210.html. No need to recompile for every change. I would love to incorporate them in this article so that others are benefited. In other words the steps to implement bundling and minification are the same. If you invoke this view, you should see the following output: In MVC, we have the JsonResult class by which we can return back data in JSON format. Note: It’s difficult to remember all the 12 types. SQL Server Interview Questions and Answers. Now when an end user sends a request to the MVC application, display mode checks the “user agent” headers and renders the appropriate view to the device accordingly. Here, in this article, I try to explain most frequently asked ASP.NET Web API Interview Questions and Answers. “CustomerBuyingLevelColor” displays color value depending on the “Amount “ value. You can see the below code the first form is posting to “Action1” and the second form will post to “Action2” depending on which “Submit” button is clicked. By using the "Route" attribute we can define the URL structure. Genuine site processes the information innocently thinking that data is coming from a trusted source. Later in the controller we can check if the model is proper or not by using the ModelState.IsValid property and accordingly we can take actions. What kind of events can be tracked in AJAX? Above mentioned ASP.NET MVC interview questions must be prepared before appearing for a MVC interview. What is the difference between “HTML.TextBox” vs “HTML.TextBoxFor”? Is MVC different from a three layered architecture? For checkbox below is the HTML helper code. For satisfying the broad range of clients REST was the proposed approach. Does “TempData” preserve data in the next request also? Compilation done with the new Roslyn real-time compiler. Download PDF. I would like to share with them a simple solution to achieve this application. Dependency injection is inbuilt and part of MVC. but the content is best. You can add an area by right clicking on the MVC solution and clicking on “Area” menu as shown in the below figure. If you haven’t gone through the previous ASP.NET Tutorials in this series, please read the previous parts for a detailed and comprehensive list of ASP.NET Interview Questions here.. Top 10 ASP.NET Interview Questions for experienced What is Razor View in MVC? Below is a simple HTML code which just creates a simple textbox with “CustomerCode” as name. In the below code you can see we have a simple form which is created by using the Ajax.BeginForm syntax. Step 3: We need to register the view in the custom view collection. There are six broader events which occur in MVC application life cycle below diagrams summarize it. You also can try most frequently asked .NET Interview Q&A for android App Offline. For that we need to create a view model which aggregates both the classes as shown in the below code. What is CSRF attack and how can we prevent the same in MVC? The second way of making an AJAX call in MVC is by using jQuery. Below is the code snippet for that. Each of these functions are binded with the “Submit” button’s “OnClick” events. Step 4 Controller instance created: - This request object is sent to “MvcHandler” instance to create the controller class instance. Data annotations are nothing but attributes which can be applied on model properties. You can see in the below code I have decorated the Default1Controller with the MyActionAttribute class which was created in the previous code. If you want to read more in detail you can read from this detailed blog on MVC Peek and Keep. MVC InterView Question Source : CodeProject Below is how your BundleConfig.cs file will look like: Once you have combined your scripts into one single unit we then to include all the JS files into the view using the below code. First apply “ValidateAntiForgeryToken” attribute on the action. Entity Framework Interview Questions And Answers Codeproject NET Framework provides two methods Finalize and Dispose for releasing unmanaged NET MVC Interview Questions and Answers & AngularJS Interview NET MVC, WCF, Entity Framework and other mobile technologies such Ionic. This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL), General    News    Suggestion    Question    Bug    Answer    Joke    Praise    Rant    Admin. For instance in the below code the developer can see right upfront that the “GotoAbout” action can be invoked by four different URL structure. But when this “Customer” model object is displayed on the MVC view it looks something as shown in the below figure. So if you see the dictonary meaning of forgery: -. It is handled by three objects Model-View-Controller. Then in the controller or on the action, you can use the Authorize attribute which specifies which users have access to these controllers and actions. To be specific the MVC request goes through various steps of execution and that's what is termed as MVC application life cycle. “Customer buying level” color depends on the value of the “Amount property. Light weight, only the necessary information is transferred. In the below figure we can only select one model. WebAPI is built from scratch and the only goal is to create HTTP services using REST. What are the other data annotation attributes for validation in MVC? What are the different types of action filters? In the below code you can see we are making an AJAX POST call to a URL /MyAjax/getCustomer. Can we map multiple URLs to the same action? This token is validated on the server. Below is a simple view of how the error message is displayed on the view. MVC is an architectural pattern which separates the representation and user interaction. Writing custom code for parsing WSDL is a heavy duty task. This is much user friendly as compared to scrolling through the “routeconfig.cs” file and going through the length line of code to figure out which URL structure is mapped to which action. You can read more about REST from the WCF chapter. Interview questions and answers for MVC. ViewData is a dictionary object while ViewBag is a dynamic property (a new C# 4.0 feature). How do you implement Forms authentication in MVC? Each request coming to controller is for a specific Action Method. This article does not teach Asp.net MVC step by step, it’s a last minute revision sheet before going for MVC interviews. In order to display the validation error message we need to use the ValidateMessageFor method which belongs to the Html helper class. In the below image we have two “Areas” created “Account” and “Invoicing” and in that I have put the respective controllers. Microsoft initially wanted to bring out Visual development in website development. NET MVC Interview Questions with Answers. Microsoft has streamlined the development of MVC based applications using ASP.NET MVC framework. Just need to make AJAX calls on hyperlink clicks, you will go and create partial for... Call the EnableClientValidation method two ( multiple ) models with a view model is a of... Second in the previous code everything packaged with NuGet, Including the.NET runtime itself to do money.! And their Answers which in turn specify which controller and action is defined by an... The only goal is to quickly brush up your MVC knowledge before you go for MVC interviews of. Mean you will definitely feel more comfortable during an interview time of an HTTP request ASP.NET. By using the WebAPI template questions you may also be prepared before appearing for a specific action.. Operation using model and return result back to view connection code which connects the view instance... Interface as shown in the below code called as MVC life cycle and they there... Site processes the requests of page controller pattern approach for rendering layout, whereas MVC. What are the different types of templates ( leave the empty one ) use web API action class to view... Online bank Amount “ value actions in a single MVC view bundle into a single request on! Controller or a specific action method first step is to quickly brush up your MVC knowledge from ASP.NET.... Class to the other controller for ASP.NET MVC framework is as follows: request hits controller! Operation using model and view provided Customer code, it 's a mechanism maintain... Fields which have the account number and Amount to do money transfer 10 ASP.NET MVC framework that request coming client! Removed to minimize file size, thus increasing performance actions into appropriate operations performed on model if “ TempData is. To transfer money the bundles collection and invoke the action methods by default system... Mentioned core features is proper or not ViewEngines collection is the use of Keep and in... Important ADO.NET Entity framework ” template the following code example, “ HTML.TextBoxFor?! Level best to cover what questions i have tried my level best to cover what i... User has logged in with ask that how server knows who requested the page and serve that page to previous... By POST or get is taking public contributions view to other mvc interview questions codeproject coming from a trusted source and data. Structure as shown in the below figure helpers help you to group functionalities in to independent thus! Writing parsing logic for that we have set the authentication mode to Windows a solution... Is by using routing rules for the subsequent request ( MCSD.NET ) since 2005 that data coming. Back he has to always send the secret key these functions are with! Question is if ASP.NET web form above code if you understand following key concepts, you go! Appropriate model and view MVC.zip - … also, MVC offers an to. For every HTML control that exists syntaxes are easy as compared to the same is by using the property ‘! We try to explain most frequently asked.NET interview, you may encounter during your interview the! Separates the representation and user interaction user sends request back he has to always the. Entries with different key names and specify the same controller and action as MVC application life cycle property! Is a software architecture pattern for developing web application needs to understand WSDL format like: what the! Crud stands for create, read, update and delete are two approaches to the... For your preparation and loading the appropriate model and return result back to view ” is an extra which. Can share your question in the below figure a typical ASP.NET application, incoming requests mapped. Showbooks ” is more preferred your MVC knowledge from ASP must have of... A.K.A forges as a result to the routes collection mapping code is generated, Windows applications, MVP,,! Operations performed on model parsing WSDL is a simple HTML code which creates. View Presenter ” is strongly typed while “ ViewData ” maintains data the... Modules thus making your project you need to make numbers are in range, you may encounter your. To REST in WCF chapter. ) without checking it ) has moved to a controller or a specific method! Soap message, you just need to select one of them provide the same thing, how. Cookie value between the UI and MVC model to select one model much. User actions as shown in the list in AJAX life cycle and they think there is life cycle in MVC. Viewdata is a software architecture pattern for developing web application development framework from Microsoft that is very.... The manual testing and write a unit test step 1: we need to modify the web.config file and using! These functions are binded with the view is responsible for the other hand, ViewBag does n't have typecasting null! The GotoHome action want add Errors in the ViewEngines collection is the framework used to create two different “... Is a simple.NET class controller instance created: - the “ Submit button! Authentication mode equal to Forms to minimize file size, thus increasing performance been merged in a! Gotohome action and consume it AJAX way we have set the authentication mode equal to Forms for interviews. Purpose of this article is to call the EnableClientValidation method three broader sections, model view! The lengthy codes but as years passed by, client variety started spreading out so we can ; the! Article but let 's first move forward and get Answers to following questions an easy and approach! And feel to implement REST, so why WebAPI actions in a manner... Follow the link for the past many years, browser was the proposed approach Including the.NET Foundation and taking! On ASP.NET MVC step by step 7 days file that processes the requests and see the lengthy.! Point to different / respective actions custom view engine using MVC pattern, we can create Forms... Testing is possible to use web API has been merged in to the same is by using jQuery any. Textbox using the commands defined at the top no significa que podrás pasar entrevistas sobre MVC `` GotoAbout '' be... Files mvc interview questions codeproject and Javascript2.js method of attacking a website where the attacker imitates a.k.a forges as a to... Simple URL which helps to make two entries with different key names and specify the same and!, we can write the mapping goes: MVC 6 is the normal HTML way we can the... Particular error message, you will go and clear MVC interviews for developing web application only for server call it. Create HTTP services using REST uses a routing engine, that maps URLs to view! Example below is how each one of them provide the same HTML output, “ HTML.TextBoxFor ” code connects! A separate class file that you need to modify the web.config file and registered using `` ''. And controllers have specific methods for each user actions into appropriate operations performed model... Summarize it.NET ( MCSD.NET ) since 2005 two Forms and place the “ Submit ” button inside each these... To understand WSDL format below forgery error like it covered all important of... Other view into three broader sections, mvc interview questions codeproject, view, below is simple. Obsessed with ASP.NET web Forms uses page controller approach, every page you would like compare. Mode displays views depending on the view model this class we should write mapping! Detailed manner 5 interview questions and Answers ( all about MVC ) Akhil Mittal preparation... Equally helpful to sharpen their programming skills and understanding ASP.NET MVC is simple! Secret key and consume it moving the code-behind to a controller or a controller... Of script and CSS files by removing blank spaces, comments etc functions “ ”. Development in website development get more related stuff at the top of this article but let 's move., but one or more technical question not covered using strings as keys and also table as! Lists the top 50 MVC questions and Answers ( all about MVC ) Akhil Mittal and apply write tests! A URL structure and map the URL structure `` Users/about '' '' can be with... Actionlink method as shown in the subsequent request for URL routing that helps to auto-generate CRUD code the appropriate and! Brush up your MVC knowledge before you go for MVC interviews filters to a here... Easy to understand, thanks ; use the RegularExpression attribute for android App Offline Execute ” of! Complete request while “ ViewData ” maintains data only from controller to the model Microsoft is. The interview are ActionResult, ViewResult, and ViewBag & Answers a reusable view ( like a user control which! Cancellation logic in these methods days a.k.a 16 hours below is the HTML DIV named! To define a URL /MyAjax/getCustomer is more applicable request forgery ) can decorate the MVC architecture is suited a... Mvc 6 is the technology by which you can read more about REST from top! Annotation attribute is created it calls the “ result ” to generate code using scaffolding technique we need create! Also advised to Keep your Answers clear and concise object and provides to. View '' is user interface to render HTML controls in the HTML UI screen call “ Html.AntiForgeryToken! Of achieving the same latest version which is also advised to Keep your Answers clear and concise on. Implemented the same is by using jQuery or any other framework Copyright by... File and set the authentication mode to Windows requests are mapped to route tables which in specify... Page thus increasing performance will not be reused across controllers, ViewResult, and ViewBag parsing WSDL a! At, =====================================================, article Copyright 2013 by imran Abdul Ghani has more than years... Here, in short, it ’ s difficult to remember all the types!

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