Quick Answer: What Are The Return Types Of Web API?

What is the difference between Web API and REST API?

While Web API in the time of Web 1.0 was synonymous with SOAP-based web services, today in Web 2.0, the term SOAP is edging towards REST-style web resources….Differences between REST and SOAP APIs.REST APISOAP APIMore secure since it boasts SSL and HTTPSIt only features SSL6 more rows•Sep 14, 2020.

How do I validate a Web API model?

Web API has Model Binding and Model Validation support….IsValid to validate the model.publicIHttpActionResultPost(Productproduct) {if (ModelState.IsValid) {//Dosomethingwiththeproduct(notshown).returnOk();} else {returnBadRequest();}}


REST determines how the API looks like. It stands for “Representational State Transfer”. It is a set of rules that developers follow when they create their API. One of these rules states that you should be able to get a piece of data (called a resource) when you link to a specific URL.

Can you develop MVC application without Visual Studio?

There are free versions that are quite capable as IDEs. If you would prefer to learn in a much more text editor experience you can also use Microsoft WebMatrix to create them on your local computer. The easiest way to install Webmatrix or Visual Studio Web Developer Express is probably using the Web Platform Installer.

What is Jsonfile?

JSON stands for JavaScript Object Notation. JSON is a lightweight format for storing and transporting data. JSON is often used when data is sent from a server to a web page. JSON is “self-describing” and easy to understand.

What are main return types supported in Web API?

The Web API action method can have following return types.Void.Primitive Type/Complex Type.HttpResponseMessage.IHttpActionResult.

What is the biggest disadvantage of other return types in Web API?

What is the disadvantage of “Other Return Types” in Web API? Ans. The main disadvantage of this approach is that you cannot directly return an error code like 404 error.

What is Actionresult in Web API?

HttpResponseMessage. HttpResponseMessage represents HTTP Response Message as per MSDN definition. If the return type of the action method is one of the Web API’s action results, then the API converts the return value to a HTTP Response Message.

How do I return HttpResponseMessage in Web API?

Using HttpResponseMessage// GetEmployee action.public HttpResponseMessage GetEmployee(int id){Employee emp = EmployeeContext.Employees.Where(e => e.Id == id).FirstOrDefault();if (emp != null){return Request.CreateResponse(HttpStatusCode.OK, emp);}More items…•

How do I return a web API list?

Web API: How To Return List Of Custom Type (JSON)In the Templates pane, select Installed Templates and expand visual C# node and select web. In the list of project Templates, select ASP.NET Web Application and Click OK. … In the new ASP.NET Project dialog, select Web API and Click Ok.We got StudentApp (our Application Name) application with all needed files.

How do I return a status code with Web API?

You can use the CreateErrorResponse extension method in your Web API controller method to return meaningful error codes and error messages. Note that the CreateErrorResponse method creates an HttpError object and then wraps it inside an HttpResponseMessage object.

What is CreatedAtAction?

CreatedAtAction(String, String, Object, Object) Creates a CreatedAtActionResult object that produces a Status201Created response. CreatedAtAction(String, Object) Creates a CreatedAtActionResult object that produces a Status201Created response.

How do I return JSON in Web API?

Let’s explore them:Change the default formatter for Accept: text/html to return JSON. … Change the default formatter for Accept: text/html to return JSON, and also return a valid Content-Type: application/json header. … Completely remove the XML formatter, forcing ASP.NET Web API to return JSON by default.

Can we return view from Web API?

An API controller is a controller which provides a RESTful response. You cannot return a view from it. … A web API should return just information. An HTTP response about what the action should do.

Should I use ActionResult or IActionResult?

IActionResult is an interface, we can create a custom response as a return, when you use ActionResult you can return only predefined ones for returning a View or a resource. With IActionResult we can return a response, or error as well.

Are MVC and Web API merged into one in MVC 6?

A prominent change in this release is the unification and combination of MVC, WEB API and Web Pages in a single programming framework called as MVC 6 which removes the overlap between the three frameworks. Also ASP.NET MVC 6 can now be self-hosted just like Web API 2 and SignalR.

How do I return XML Web API?

If you return a serializable object, WebAPI will automatically send JSON or XML based on the Accept header that your client sends. If you return a string, you’ll get a string. If you don’t want the controller to decide the return object type, you should set your method return type as System.

How do I return a JSON response from REST API?

Use JBoss @BadgerFish annotation that supports to return response as JSON. To return JSON as response we need to use media type as application/json.