1) Explain in which assembly is
the MVC framework is defined?
The MVC framework is defined in System.Web.Mvc.
2) Explain what is Model-View-Controller?
MVC is a software architecture pattern for developing web
application. It is handled by three objects Model-View-Controller.
3) Mention what does Model-View-Controller represent in an MVC
application?
In an MVC model,
ü Model–
It represents the application data domain. In other words applications business
logic is contained within the model and is responsible for maintaining data
ü View–
It represents the user interface, with which the end users communicates. In
short all the user interface logic is contained within the VIEW
ü Controller–
It is the controller that answers to user actions. Based on the user actions,
the respective controller responds within the model and choose a view to render
that display the user interface. The user input logic is contained
with-in the controller
4) Mention what is the difference between adding routes, to a
webform application and an MVC application?
To add routes to a webform application, we can use MapPageRoute()
method of the RouteCollection class, where adding routes to an MVC application,
you can use MapRoute() method.
5) List out few different return types of a controller action
method?
ü View
Result
ü Javascript
Result
ü Redirect
Result
ü Json
Result
ü Content
Result
6) Mention what are the two ways to add constraints to a route?
The two methods to add constraints to a route is
ü Use
regular expressions
ü Use an
object that implements IRouteConstraint Interface
7) Mention what is the advantages of MVC?
ü MVC
segregates your project into a different segment, and it becomes easy for
developers to work on
ü It is
easy to edit or change some part of your project that makes project less
development and maintenance cost
ü MVC
makes your project more systematic
8) Mention what “beforFilter()”,“beforeRender” and “afterFilter”
functions do in Controller?
ü beforeFilter():
This function is run before every action in the controller. It’s the right
place to check for an active session or inspect user permissions.
ü beforeRender():
This function is called after controller action logic, but before the view is
rendered. This function is not often used, but may be required If you are
calling render() manually before the end of a given action
ü afterFilter():
This function is called after every controller action, and after rendering is
done. It is the last controller method to run
9) Explain the role of components Presentation, Abstraction and
Control in MVC?
ü Presentation:
It is the visual representation of a specific abstraction within the
application
ü Abstraction:
It is the business domain functionality within the application
ü Control:
It is a component that keeps consistency between the abstraction within the
system and their presentation to the user in addition to communicating with
other controls within the system.
10) Mention the advantages and disadvantages of MVC model?
Advantages
|
Disadvantages
|
·
It represents
clear separation between business logic and presentation logic
·
Each MVC object
has different responsibilities
·
The development
progresses in parallel
·
Easy to manage
and maintain
·
All classes and
object are independent of each other
|
·
The model pattern
is little complex
·
Inefficiency of
data access in view
·
With modern user
interface, it is difficult to use MVC
·
You need multiple
programmers for parallel development
·
Multiple
technologies knowledge is required
|
11) Explain the role of “ActionFilters” in MVC?
In MVC “ ActionFilters” help you to execute logic while MVC action
is executed or its executing.
12) Explain what are the steps for the execution of an MVC
project?
The steps for the execution of an MVC project includes
o
Receive first request for the application
o
Performs routing
o
Creates MVC request handler
o
Create Controller
o
Execute Controller
o
Invoke action
o
Execute Result
13) Explain what is routing? What are the three segments for
routing is important?
Routing helps you to decide a URL structure and map the URL with
the Controller.
The three segments that are important for routing is
o
ControllerName
o
ActionMethodName
o
Parameter
14) Explain how routing is done in MVC pattern?
There is a group of routes called the RouteCollection, which
consists of registered routes in the application. The RegisterRoutes
method records the routes in this collection. A route defines a URL
pattern and a handler to use if the request matches the pattern. The first
parameter to the MapRoute method is the name of the route. The second parameter
will be the pattern to which the URL matches. The third parameter might
be the default values for the placeholders if they are not determined.
15) Explain using hyperlink how you can navigate from one view to
other view?
By using “ActionLink” method as shown in the below code. The below
code will make a simple URL which help to navigate to the “Home” controller and
invoke the “GotoHome” action.
Collapse / Copy Code
<%= Html.ActionLink(“Home”, “Gotohome”) %>
16) Mention how can maintain session in MVC?
Session can be maintained in MVC by three ways tempdata, viewdata,
and viewbag.
17) Mention what is the difference between Temp data, View, and
View Bag?
ü Temp
data: It helps to maintain data when you shift from one controller to other
controller.
ü View
data: It helps to maintain data when you move from controller to view
ü View
Bag: It’s a dynamic wrapper around view data
18) What is partial view in MVC?
Partial view in MVC renders a portion of view content. It is
helpful in reducing code duplication. In simple terms, partial view allows to
render a view within the parent view.
19) Explain how you can implement Ajax in MVC?
In Ajax, MVC can be implemented in two ways
ü Ajax
libraries
ü Jquery
20) Mention what is the difference between “ActionResult” and
“ViewResult” ?
“ActionResult” is an abstract class while “ViewResult” is derived
from “AbstractResult” class. “ActionResult” has a number of derived
classes like “JsonResult”, “FileStreamResult” and “ViewResult” .
“ActionResult” is best if you are deriving different types of view
dynamically.
21) Explain how you can send the result back in JSON format in
MVC?
In order to send the result back in JSON format in MVC, you can
use “JSONRESULT” class.
22) Explain what is the difference between View and Partial View?
23) List out the types of result in MVC?
View
|
Partial View
|
·
It contains the
layout page
·
Before any view
is rendered, viewstart page is rendered
·
View might have
markup tags like body, html, head, title, meta etc.
·
View is not
lightweight as compare to Partial View
|
·
It does not
contain the layout page
·
Partial view does
not verify for a viewstart.cshtml. We cannot put common code for a partial
view within the viewStart.cshtml.page
·
Partial view is
designed specially to render within the view and just because of that it does
not consist any mark up
·
We can pass a
regular view to the RenderPartial method
|
In MVC, there are twelve types of results in MVC where
“ActionResult” class is the main class while the 11 are their sub-types
ü ViewResult
ü PartialViewResult
ü EmptyResult
ü RedirectResult
ü RedirectToRouteResult
ü JsonResult
ü JavaScriptResult
ü ContentResult
ü FileContentResult
ü FileStreamResult
ü FilePathResult
24) Mention what is the importance of NonActionAttribute?
All public methods of a controller class are treated as the action
method if you want to prevent this default method then you have to assign the
public method with NonActionAttribute.
25) Mention what is the use of the default route
{resource}.axd/{*pathinfo} ?
This default route prevents request for a web resource file such
as Webresource.axd or ScriptResource.axd from being passed to the controller.
26) Mention the order of the filters that get executed, if the
multiple filters are implemented?
The filter order would be like
ü Authorization
filters
ü Action
filters
ü Response
filters
ü Exception
filters
27) Mention what filters are executed in the end?
In the end “Exception Filters” are executed.
28) Mention what are the file extensions for razor views?
For razor views the file extensions are
ü .cshtml:
If C# is the programming language
ü .vbhtml:
If VB is the programming language
29) Mention what are the two ways for adding constraints to a
route?
Two methods for adding constraints to route is
ü Using
regular expressions
ü Using
an object that implements IRouteConstraint interface
30) Mention two instances where routing is not implemented or
required?
Two instance where routing is not required are
ü When a
physical file is found that matches the URL pattern
ü When
routing is disabled for a URL pattern
