There are many derived actionresult types in mvc that you may use to return the results of a controller method. An introduction to actionresults in mvc dot net concept. The purpose of this concept is to return a generic actionresult object for each controller method, allowing different child classes returning different results. I decided to build a base class pdfresult to abstract the contenttype implementation as well as it will also serve as a common return. The view method returns an instance of the viewresult class, which is derived from actionresult. Difference between actionresult and viewresult slideshare. Net mvc, incoming browser requests gets mapped to a controller action method. Lets peel back the covers on actionresult and discover why it and its derived classes are critical to understanding asp. And to some extent, if you had a test that called it, if someone removed that view from the controller, the test would no longer compile. Actionresult is a general result type that can have several subtypes. This is used to populate data with out refreshing the page. For example, the most common action is to call the view method. Viewresult is a datatype which is responsible for returning the view. Initializes a new instance of the actionresult class.
May 20 2 april 20 22 march 20 14 february 20 7 january 20 7 december 2012 8 categories. In order to create my own actionresult, i created a pdfactionresult class which inherits from an abstract actionresult class. After calling the action method in browser, the file will ask for download as shown in. It help us to return models to views, other return value, and also redirect to another controllers action method. Action results return the result to view the page for the given request. Actionresult has several derived classes like viewresult,jsonresult, filestreamresult and so on. When it is used with action method, it is called return type. First to understandactionresult and viewresult are basically a return type for an methodi.
And how to create and use controller in mvc application. Net mvc controller, its action method and action result. Jun 20, 2018 action result is actually a data type. What is difference between actionresult and iactionresult. List of subclasses derived from actionresult abstract class. Difference between viewresult and actionresult in asp net mvc may be you like this our channel. Initializes a new instance of the viewresult class.
Net mvc controller, action method and actionresult. 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. May 31, 2016 the diagram shown below describes about abstract class of action result. As we see in the visual studio, the actionresult type is coming from system. In this article we will learn what are the available action results and which one we need to use in which case. What is the difference between viewresult and actionresult in. Difference between viewresult and actionresult 300. Here, in this article we will learn about differences between them. Mvc assembly, then you can download after clicking here.
See the different actionresults and learn about when to use each of. Mvc, then expand actionresult and then expand derived types. To download the most uptodate version of the framework, see the asp. Bruce provides an example to elaborate a bit more on this as understanding the use of interfaces and other. Net core has been improved because it can be now asynchronous. You can generally recognize these types of things as interfaces usually have the notation iyourclasshere such as ienumerable, idisposible, etc. There are many derived actionresult types in mvc that we use to return the result of a controller method to the view. Difference between viewresult and actionresult in asp net mvc.
To see inside the assembly, you can either follow the following steps after downloading ilspy or you can watch this video by clicking here. Hi, im new to mvc nooob, and following ms tutorial, and its just introduced async task and shows the benefits. Difference between viewresult and actionresult in mvc. Net mvc interview question which making circles around. Click ok when the create unit test project dialog box is displayed, make sure yes, create a. Feb 24, 2015 any action in an mvc controller, generally speaking, returns an actionresult. Hi, im new to mvc nooob, and following ms tutorial, and its just introduced async task actionresult and shows the benefits. Net mvc actionresult and viewresult both are mainly a return type for controller action method. Viewresult renders a specifed view to the response stream actionresult is an abstract class that can have several subtypes. Viewresult view this return type is used to return a webpage from an action method. Definition action result is a result of action methods or return types of action methods. 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.
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. An actionresult is a return type of a controller method in mvc. Does it mean that you should use async task all the time rather than the normal actionresult, which is how it started the tutorial. Difference between viewresult and actionresult stick2basic. And viewresult is an implementation for this abstract class. In the company im currently working for, it is a common practice to use devexpress xtrareports to create all kind of reports. Net framework 4 introduced an asynchronous programming concept referred to as a task and asp. Usually these reports are embedded into html page and. Dec 15, 2016 difference between viewresult and actionresult in asp net mvc may be you like this our channel. Jsonresult is returned by asynchronous posting inside the application by jquery. You should now be able to see all the derived types. Whats the difference between actionresult and viewresult for.
What is the difference between viewresult and actionresult. As the others have mentioned, iactionresult is simply the interface and an actionresult is a generic implementation of that same interface. How do i redirect within a viewresult or actionresult function. 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. The actionresult class is the base for all action results. This tutorial will teach you the basics of building an asynchronous asp. Each result has a different type of result format to view page. Net mvc web application template name the solution mvccontacts. Actionresult is a general result type that can have several subtypes from asp. Mvc difference between viewresult and actionresult. 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. And the problem is that we cant see inside this assembly with go to definition feature of visual studio.
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. Any action in an mvc controller, generally speaking, returns an actionresult. Viewresult renders a specifed view to the response stream. Recently lots of interview questions are asked around asp.
Net mvc web application using visual studio express 2012 for web, which is a free version of microsoft visual studio. Actionresult is a base class for viewresult in mvc framework, it uses actionresult class to reference the object our action method returns. There are plenty of action results are available according to need but all action results are inherited by actionresult class. It is the responsibility of the controller that it connects the component. It is possible be explicit about what type to return, but generally it not necessary. There are different types of action results in asp. Net web forms 39 mvc 39 39 view engine vs aspx view engine 40 16. Nov 01, 2014 so when you see mvc controller and action codes as shown below. 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. Actionresult is an abstract class that can have several subtypes. One is actionresult and another one is executeresult. The action method returns a type of actionresult in response to the browser request. Part 78 different types of actionresult in asp net mvc. In mvc framework, it uses actionresult class to reference the object your action method returns.
And have next question how can i do to make my action to returns generated html as file for download. Net cloudfront cryptography ctp dns download dropzonejs entity framework facebook featured framework iis iis 8 iisnode interview question javascript jquery jquery mobile json knockout. So when you see mvc controller and action codes as shown below. So, we have now option to create custom action result with async support. How to connect two routers on one home network using a lan cable stock router netgeartplink duration. 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. Part 78 different types of actionresult in asp net mvc youtube. You can also use visual studio 2012 a complete sample is provided for this tutorial on. Net mvc and have just started to read some of the online guides. So really these two code snippets do the exact same thing. Obviously that class represents an action of some kind, but exactly what does it do. To learn more about actionresult and some of the other following action result types, please go through the following articles in my blog. View result class is inherited from action result class by view result. The controller class is inherited from controllerbase.
However, there are different action result types, depending on the task that the action method is performing. This article will explain to you different types of actionresult in mvc with example. Since mvc follows conventionoverconfiguration, mvc will look for a. The actionresult class is the base class for all action results. This database file is part of the sample project that you can download for this project. Action methods help us to return models to views, file streams, and also redirect to another controllers action method.
The actionresult method works as a return type of any controller method in the mvc. An example actionresult builtin is the renderviewresult. 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. Controller class is responsible for handling incoming request, process. Net mvc controller, action method and actionresult in this article i am going to explain about asp. It helps to send the content in javascript object notation json format. Actionresult is a return type of a controller method in asp. Nov 17, 2016 how to connect two routers on one home network using a lan cable stock router netgeartplink duration. Unit testing a very simple viewresult in mvc karlz. Whats the difference between actionresult and viewresult. Enables processing of the result of an action method by a custom type that inherits from the actionresult class. Actionresult is an abstract class while viewresult derives from actionresult class. Viewresult and actionresult in mvcactionresult is an abstract or base class.
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