Does Tempdata Hold The Data For Other Request In Asp.net Mvc?
If Tempdata is assigned in the current request then it will be available for the current request and the subsequent request and it depends whether data in TempData read or not. If data in Tempdata is read then it would not be available for the subsequent requests.
Explain Keep Method In Tempdata In Asp.net Mvc?
As explained above in case data in Tempdata has been read in current request only then "Keep" method has been used to make it available for the subsequent request.
@TempData["TestData"];
TempData.Keep("TestData");
Explain Peek Method In Tempdata In Asp.net Mvc?
Similar to Keep method we have one more method called "Peek" which is used for the same purpose. This method used to read data in Tempdata and it maintains the data for subsequent request.
string A4str = TempData.Peek("TT").ToString();
What Is Area In Asp.net Mvc?
Area is used to store the details of the modules of our project. This is really helpful for big applications, where controllers, views and models are all in main controller, view and model folders and it is very difficult to manage.
How We Can Register The Area In Asp.net Mvc?
When we have created an area make sure this will be registered in "Application_Start" event in Global.asax.
Below is the code snippet where area registration is done
protected void Application_Start()
{
AreaRegistration.RegisterAllAreas();
}
What Are Child Actions In Asp.net Mvc?
To create reusable widgets child actions are used and this will be embedded into the parent views. In ASP.Net MVC Partial views are used to have reusability in the application. Child action mainly returns the partial views.
Explain Test Driven Development (tdd) ?
TDD is a methodology which says, write your tests first before you write your code. In TDD, tests drive your application design and development cycles. You do not do the check-in of your code into source control until all of your unit tests pass.
Explain The Tools Used For Unit Testing In Asp.net Mvc?
Below are the tools used for unit testing
NUnit
xUnit.NET
Ninject 2
Moq
What Is Representational State Transfer (rest) Mean?
REST is an architectural style which uses HTTP protocol methods like GET, POST, PUT, and DELETE to access the data. ASP.Net MVC works in this style. In ASP.Net MVC 4 there is a support for Web API which uses to build the service using HTTP verbs.
How To Return The Json From Action Method In Asp.net Mvc?
Below is the code snippet to return string from action method
public ActionResult TestAction() {
return JSON(new { prop1 = "Test1", prop2 = "Test2" });
}
How Does The 'page Lifecycle' Of Asp.net Mvc Works?
Below are the processed followed in the sequence
App initializWhat is Separation of Concerns in ASP.NET ASP.Net MVCation
Routing
Instantiate and execute controller
Locate and invoke controller action
Instantiate and render view.
Explain The Advantages Of Asp.net Mvc Over Asp.net?
Provides a clean separation of concerns among UI (Presentation layer), model (Transfer objects/Domain Objects/Entities) and Business Logic (Controller).
Easy to UNIT Test.
Improved reusability of model and views. We can have multiple views which can point to the same model and vice versa.
Improved structuring of the code.
What Is Separation Of Concerns In Asp.net Asp.net Mvc?
It is the process of breaking the program into various distinct features which overlaps in functionality as little as possible. ASP.Net MVC pattern concerns on separating the content from presentation and data-processing from content.
List out few different return types of a controller action method?
View Result
Javascript Result
Redirect Result
Json Result
Content Result
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.
Mention what are the two ways to add constraints to a route?
The two methods to add constraints to a route is
Use regular expressions
Use an object that implements IRouteConstraint Interface
Mention two instances where routing is not implemented or required?
Two instance where routing is not required are
When a physical file is found that matches the URL pattern
When routing is disabled for a URL pattern
Mention what are main benefits of using MVC?
There are two key benefits of using MVC
As the code is moved behind a separate class file, you can use the code to a great extent
As behind code is simply moved to.NET class, it is possible to automate UI testing. This gives an opportunity to automate manual testing and write unit tests.
Mention what is the advantages of MVC?
MVC segregates your project into a different segment, and it becomes easy for developers to work on
It is easy to edit or change some part of your project that makes project less development and maintenance cost
MVC makes your project more systematic
Mention what “beforFilter()”,“beforeRender” and “afterFilter” functions do in Controller?
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.
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
afterFilter(): This function is called after every controller action, and after rendering is done. It is the last controller method to run
Explain the role of components Presentation, Abstraction and Control in MVC?
Presentation: It is the visual representation of a specific abstraction within the application
Abstraction: It is the business domain functionality within the application
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
Explain the role of “ActionFilters” in MVC?
In MVC “ ActionFilters” help you to execute logic while MVC action is executed or its executing.
Explain what are the steps for the execution of an MVC project?
The steps for the execution of an MVC project includes
Receive first request for the application
Performs routing
Creates MVC request handler
Create Controller
Execute Controller
Invoke action
Execute Result
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.
Mention what does Model-View-Controller represent in an MVC application?
In an MVC model,
Model– It represents the application data domain. In other words applications business logic is contained within the model and is responsible for maintaining data
View– It represents the user interface, with which the end users communicates. In short all the user interface logic is contained within the VIEW
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
Explain in which assembly is the MVC framework is defined?
If Tempdata is assigned in the current request then it will be available for the current request and the subsequent request and it depends whether data in TempData read or not. If data in Tempdata is read then it would not be available for the subsequent requests.
Explain Keep Method In Tempdata In Asp.net Mvc?
As explained above in case data in Tempdata has been read in current request only then "Keep" method has been used to make it available for the subsequent request.
@TempData["TestData"];
TempData.Keep("TestData");
Explain Peek Method In Tempdata In Asp.net Mvc?
Similar to Keep method we have one more method called "Peek" which is used for the same purpose. This method used to read data in Tempdata and it maintains the data for subsequent request.
string A4str = TempData.Peek("TT").ToString();
What Is Area In Asp.net Mvc?
Area is used to store the details of the modules of our project. This is really helpful for big applications, where controllers, views and models are all in main controller, view and model folders and it is very difficult to manage.
How We Can Register The Area In Asp.net Mvc?
When we have created an area make sure this will be registered in "Application_Start" event in Global.asax.
Below is the code snippet where area registration is done
protected void Application_Start()
{
AreaRegistration.RegisterAllAreas();
}
What Are Child Actions In Asp.net Mvc?
To create reusable widgets child actions are used and this will be embedded into the parent views. In ASP.Net MVC Partial views are used to have reusability in the application. Child action mainly returns the partial views.
Explain Test Driven Development (tdd) ?
TDD is a methodology which says, write your tests first before you write your code. In TDD, tests drive your application design and development cycles. You do not do the check-in of your code into source control until all of your unit tests pass.
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| Tech Mahindra Frequently Asked ASP.NET MVC Interview Questions Answers |
Explain The Tools Used For Unit Testing In Asp.net Mvc?
Below are the tools used for unit testing
NUnit
xUnit.NET
Ninject 2
Moq
What Is Representational State Transfer (rest) Mean?
REST is an architectural style which uses HTTP protocol methods like GET, POST, PUT, and DELETE to access the data. ASP.Net MVC works in this style. In ASP.Net MVC 4 there is a support for Web API which uses to build the service using HTTP verbs.
How To Return The Json From Action Method In Asp.net Mvc?
Below is the code snippet to return string from action method
public ActionResult TestAction() {
return JSON(new { prop1 = "Test1", prop2 = "Test2" });
}
How Does The 'page Lifecycle' Of Asp.net Mvc Works?
Below are the processed followed in the sequence
App initializWhat is Separation of Concerns in ASP.NET ASP.Net MVCation
Routing
Instantiate and execute controller
Locate and invoke controller action
Instantiate and render view.
Explain The Advantages Of Asp.net Mvc Over Asp.net?
Provides a clean separation of concerns among UI (Presentation layer), model (Transfer objects/Domain Objects/Entities) and Business Logic (Controller).
Easy to UNIT Test.
Improved reusability of model and views. We can have multiple views which can point to the same model and vice versa.
Improved structuring of the code.
What Is Separation Of Concerns In Asp.net Asp.net Mvc?
It is the process of breaking the program into various distinct features which overlaps in functionality as little as possible. ASP.Net MVC pattern concerns on separating the content from presentation and data-processing from content.
List out few different return types of a controller action method?
View Result
Javascript Result
Redirect Result
Json Result
Content Result
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.
Mention what are the two ways to add constraints to a route?
The two methods to add constraints to a route is
Use regular expressions
Use an object that implements IRouteConstraint Interface
Mention two instances where routing is not implemented or required?
Two instance where routing is not required are
When a physical file is found that matches the URL pattern
When routing is disabled for a URL pattern
Mention what are main benefits of using MVC?
There are two key benefits of using MVC
As the code is moved behind a separate class file, you can use the code to a great extent
As behind code is simply moved to.NET class, it is possible to automate UI testing. This gives an opportunity to automate manual testing and write unit tests.
Mention what is the advantages of MVC?
MVC segregates your project into a different segment, and it becomes easy for developers to work on
It is easy to edit or change some part of your project that makes project less development and maintenance cost
MVC makes your project more systematic
Mention what “beforFilter()”,“beforeRender” and “afterFilter” functions do in Controller?
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.
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
afterFilter(): This function is called after every controller action, and after rendering is done. It is the last controller method to run
Explain the role of components Presentation, Abstraction and Control in MVC?
Presentation: It is the visual representation of a specific abstraction within the application
Abstraction: It is the business domain functionality within the application
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
Explain the role of “ActionFilters” in MVC?
In MVC “ ActionFilters” help you to execute logic while MVC action is executed or its executing.
Explain what are the steps for the execution of an MVC project?
The steps for the execution of an MVC project includes
Receive first request for the application
Performs routing
Creates MVC request handler
Create Controller
Execute Controller
Invoke action
Execute Result
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.
Mention what does Model-View-Controller represent in an MVC application?
In an MVC model,
Model– It represents the application data domain. In other words applications business logic is contained within the model and is responsible for maintaining data
View– It represents the user interface, with which the end users communicates. In short all the user interface logic is contained within the VIEW
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
Explain in which assembly is the MVC framework is defined?
The MVC framework is defined in System.Web.Mvc.
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