Feb 24, 2015 any action in an mvc controller, generally speaking, returns an actionresult. You should now be able to see all the derived types. Recently lots of interview questions are asked around asp. So really these two code snippets do the exact same thing. In case you are a newbie to polymorphism, lets do a quick revision. Actionresult is an abstract class, and its base class for viewresult class.
In the company im currently working for, it is a common practice to use devexpress xtrareports to create all kind of reports. And viewresult is an implementation for this abstract class. How do i redirect within a viewresult or actionresult function. Mvc difference between viewresult and actionresult. You can also use visual studio 2012 a complete sample is provided for this tutorial on. As you know, an action is referred to as a method of the controller, the action result is the result of action when it executes.
There are different types of action results in asp. May 31, 2016 the diagram shown below describes about abstract class of action result. This article will explain to you different types of actionresult in mvc with example. Viewresult view this return type is used to return a webpage from an action method. Actionresult is a general result type that can have several subtypes. Whats the difference between actionresult and viewresult. The view method returns an instance of the viewresult class, which is derived from actionresult. Each result has a different type of result format to view page. Action results return the result to view the page for the given request. There are many derived actionresult types in mvc that we use to return the result of a controller method to the view. Part 78 different types of actionresult in asp net mvc. I decided to build a base class pdfresult to abstract the contenttype implementation as well as it will also serve as a common return. There are plenty of action results are available according to need but all action results are inherited by actionresult class.
The only difference is that with the actionresult one, your controller isnt promising to return a view you could change the method body to conditionally return. Action methods help us to return models to views, file streams, and also redirect to another controllers action method. Viewresult renders a specifed view to the response stream. Jsonresult is returned by asynchronous posting inside the application by jquery. Does it mean that you should use async task all the time rather than the normal actionresult, which is how it started the tutorial. One is actionresult and another one is executeresult. Initializes a new instance of the viewresult class. List of subclasses derived from actionresult abstract class. Difference between viewresult and actionresult in mvc. Net core has been improved because it can be now asynchronous.
This is used to populate data with out refreshing the page. Net cloudfront cryptography ctp dns download dropzonejs entity framework facebook featured framework iis iis 8 iisnode interview question javascript jquery jquery mobile json knockout. Obviously that class represents an action of some kind, but exactly what does it do. Actionresult is an abstract class that can have several subtypes. Actionresult subtypes viewresult renders a specifed view to the response stream partialviewresult renders a specifed partial view to the response stream emptyresult an empty response. Net mvc web application using visual studio express 2012 for web, which is a free version of microsoft visual studio. What is the difference between viewresult and actionresult. May 20 2 april 20 22 march 20 14 february 20 7 january 20 7 december 2012 8 categories. Net mvc, incoming browser requests gets mapped to a controller action method. Hi, im new to mvc nooob, and following ms tutorial, and its just introduced async task actionresult and shows the benefits. It is used to return the models to the views, file streams and also redirect to the controllers. This tutorial will teach you the basics of building an asynchronous asp. Net mvc controller, its action method and action result. Hi, im new to mvc nooob, and following ms tutorial, and its just introduced async task and shows the benefits.
Mvc, then expand actionresult and then expand derived types. Whats the difference between actionresult and viewresult for. This database file is part of the sample project that you can download for this project. You can generally recognize these types of things as interfaces usually have the notation iyourclasshere such as ienumerable, idisposible, etc. It is the responsibility of the controller that it connects the component. How to connect two routers on one home network using a lan cable stock router netgeartplink duration.
It helps to send the content in javascript object notation json format. Recently, i needed an actionresult implementation to return the pdf documents from my controller action to mvc views and it tooks few minutes to build the functionality on the existing fileresult. However, there are different action result types, depending on the task that the action method is performing. What is difference between actionresult and iactionresult. Part 78 different types of actionresult in asp net mvc youtube. And have next question how can i do to make my action to returns generated html as file for download. It is possible be explicit about what type to return, but generally it not necessary.
Initializes a new instance of the actionresult class. To download the most uptodate version of the framework, see the asp. The actionresult method works as a return type of any controller method in the mvc. It help us to return models to views, other return value, and also redirect to another controllers action method. An example actionresult builtin is the renderviewresult. Nov 17, 2016 how to connect two routers on one home network using a lan cable stock router netgeartplink duration. Lets peel back the covers on actionresult and discover why it and its derived classes are critical to understanding asp. When it is used with action method, it is called return type. Net web forms 39 mvc 39 39 view engine vs aspx view engine 40 16. Definition action result is a result of action methods or return types of action methods. Difference between actionresult and viewresult slideshare.
Usually these reports are embedded into html page and. Difference between viewresult and actionresult stick2basic. Actionresult is a return type of a controller method in asp. What is the difference between viewresult and actionresult in. So when you see mvc controller and action codes as shown below. In order to create my own actionresult, i created a pdfactionresult class which inherits from an abstract actionresult class. The action method returns a type of actionresult in response to the browser request. For example, the most common action is to call the view method. First to understandactionresult and viewresult are basically a return type for an methodi. Any action in an mvc controller, generally speaking, returns an actionresult. Difference between viewresult and actionresult in asp net mvc may be you like this our channel. Net mvc actionresult and viewresult both are mainly a return type for controller action method.
Difference between viewresult and actionresult 300. And how to create and use controller in mvc application. Enables processing of the result of an action method by a custom type that inherits from the actionresult class. Here, in this article we will learn about differences between them. Since mvc follows conventionoverconfiguration, mvc will look for a. Controller class is responsible for handling incoming request, process. An introduction to actionresults in mvc dot net concept. Viewresult is a datatype which is responsible for returning the view. To learn more about actionresult and some of the other following action result types, please go through the following articles in my blog. See the different actionresults and learn about when to use each of. Unit testing a very simple viewresult in mvc karlz. In mvc controls there are different type of action result we use as a return type from a controller action method in which viewresult, actionresult and jsonresult are commonly used.
As the others have mentioned, iactionresult is simply the interface and an actionresult is a generic implementation of that same interface. The actionresult class is the base for all action results. The actioninvoker decide which type of action result to return based on the task that the action method is performing. Difference between viewresult and actionresult in asp net mvc. Difference between viewresult and actionresult interview question. Actionresult is an abstract class while viewresult derives from actionresult class. Each action method has a return type and we call it as action result. So, we have now option to create custom action result with async support.
In this article we will learn what are the available action results and which one we need to use in which case. Net mvc interview question which making circles around. The diagram shown below describes about abstract class of action result. An actionresult is a return type of a controller method in mvc. Free source code and tutorials for software developers and architects updated. Dec 15, 2016 difference between viewresult and actionresult in asp net mvc may be you like this our channel. Nov 19, 2012 a simple pdf actionresult in mvc posted on november 19, 2012 by cprakash recently, i needed an actionresult implementation to return the pdf documents from my controller action to mvc views and it tooks few minutes to build the functionality on the existing fileresult. The actionresult class is the base class for all action results. Mvc assembly, then you can download after clicking here. Bruce provides an example to elaborate a bit more on this as understanding the use of interfaces and other. The controller class is inherited from controllerbase. Nov 01, 2014 so when you see mvc controller and action codes as shown below. The purpose of this concept is to return a generic actionresult object for each controller method, allowing different child classes returning different results.
As we see in the visual studio, the actionresult type is coming from system. There are many derived actionresult types in mvc that you may use to return the results of a controller method. Net mvc return viewresult as html file stack overflow. Net mvc web application template name the solution mvccontacts. Jun 20, 2018 action result is actually a data type. Actionresult is a general result type that can have several subtypes from asp. Gets the name of the master view such as a master page or template to use when the view is rendered.
Click ok when the create unit test project dialog box is displayed, make sure yes, create a. Net mvc controller, action method and actionresult in this article i am going to explain about asp. Net mvc and have just started to read some of the online guides. Net mvc controller, action method and actionresult. And the problem is that we cant see inside this assembly with go to definition feature of visual studio. The above code means that you are returning a viewresult object and due to polymorphism, this object is automatically type casted to the parent class type, i. After calling the action method in browser, the file will ask for download as shown in. Viewresult renders a specifed view to the response stream actionresult is an abstract class that can have several subtypes. View result class is inherited from action result class by view result. The solution presented above works fine, however, i wanted to create something more reusable, that is why i decided to create a custom actionresult pdfactionresult. In mvc all actions are performed through controller.
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