October 13, 2018

Sreekanth B

Convergys Most Frequently Asked ASP.NET MVC Interview Questions Answers

Can we add constraints to the route? If yes, explain how we can do it?

Yes we can add constraints to route in following ways –

Using Regular Expressions

Using object which implements interface — IRouteConstraint.

What are the possible Razor view extensions?

Below are the two types of extensions razor view can have –

.cshtml — In C# programming language this extension will be used.

.vbhtml — In VB programming language this extension will be used.

What is PartialView in MVC?

PartialView is similar to UserControls in traditional web forms. For re-usability purpose partial views are used. Since it’s been shared with multiple views these are kept in shared folder. Partial Views can be rendered in following ways –

Html.Partial()

Html.RenderPartial().
Convergys Most Frequently Asked ASP.NET MVC Interview Questions Answers
Convergys Most Frequently Asked ASP.NET MVC Interview Questions Answers

What Is Razor View Engine?

Razor is the first major update to render HTML in ASP.Net MVC 3. Razor was designed specifically for view engine syntax. Main focus of this would be to simplify and code-focused templating for HTML generation.

Below is the sample of using Razor

@model ASP.Net MVCMusicStore.Models.Customer

@{ViewBag.Title = "Get Customers";}

< div class="cust">

@Model.CustomerName

What Is The Meaning Of Unobtrusive Javascript? Explain Us By Any Practical Example?

This is a general term that conveys a general philosophy, similar to the term REST (Representational State Transfer). Unobtrusive JavaScript doesn't inter mix JavaScript code in your page markup. Eg : Instead of using events like onclick and onsubmit, the unobtrusive JavaScript attaches to elements by their ID or class based on the HTML5 data- attributes.

Breifly Explain Us What Is Asp.net Mvc?

ASP.Net MVC is a pattern which is used to split the application's implementation logic into three components i.e. models, views, and controllers.

Tell Us Something About Model, View And Controllers In Asp.net Mvc?

Model : It is basically a business entity which is used to represent the application data.

Controller : The Request which is sent by the user always scatters through controller and it's responsibility is to redirect to the specific view using View () method.

View : it's the presentation layer of ASP.Net MVC.

Do You Know About The New Features In Asp.net Mvc 5?

Following are features added newly : Mobile templates Added ASP.NET Web API template for creating REST based services. Asynchronous controller task support. Bundling of the java scripts. Segregating the configs for ASP.Net MVC routing, Web API, Bundle etc.

What Is The Use Of View Model In Asp.net Mvc?

View Model is a plain class with properties, which is used to bind it to strongly typed view. View Model can have the validation rules defined for its properties using data annotations.

What You Mean By Routing In Asp.net Mvc?

Routing is a pattern matching mechanism of incoming requests to the URL patterns which are registered in route table. Class : "UrlRoutingModule" is used for the same process.

What Are Actions In Asp.net Mvc?

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.

What Is Attribute Routing In Asp.net Mvc?

ASP.NET Web API supports this type routing. This is introduced in ASP.Net MVC5. In this type of routing, attributes are being used to define the routes. This type of routing gives more control over classic URI Routing.

Attribute Routing can be defined at controller level or at Action level like

[Route("{action = TestCategoryList}")] - Controller Level

[Route("customers/{TestCategoryId:int:min(10)}")] - Action Level

How To Enable Attribute Routing?

Just add @Model.CustomerName the method : "MapASP.Net MVCAttributeRoutes()" to enable attribute routing as shown below

public static void RegisterRoutes(RouteCollection routes)

    {

        routes.IgnoreRoute("{resource}.axd/{*pathInfo}");

        //enabling attribute routing

        routes.MapASP.Net MVCAttributeRoutes();

        //convention-based routing

        routes.MapRoute

        (

            name: "Default",

            url: "{controller}/{action}/{id}",

            defaults: new { controller = "Customer", action = "GetCustomerList", id = UrlParameter.Optional }

        );

  }

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