Custom Action Methods In ASP.NET Web API

Introduction

This article explains how to create custom action methods in ASP.NET Web API. In Web API, we use default action methods like Get, Put, Post, and Update.This article helps you to learn how to create custom action methods instead of these default action methods in ASP.NET Web API. Before reading this article, kindly read the previous part of this article from the following link.

Default Action Methods

In Web API, Get, Post, Put, and Delete verbs are used as corresponding action methods- Get(), Post ([FromBody]string value), Put (int id, [FromBody]string value), Delete (int id) for manipulating data like get, insert, update and delete.

We have added ValueController, default action methods, and manipulating functionalities using static variable. Just look at the below code.

Type 1

When we run Web API in ASP.NET, it calls Get () because Get () is mapped into Web API controllers. We can see the following outputs.


Type 2

We will change the action name with prefix Get verb. After changing the action name like GetValues(), run the Web API. Now also, we are getting the same output. In the Web API, Http verb should be used in prefix in every action name.

Type 3

Here, we change the action method name with a fully different one, like “Values()” and build run the web API. Now, our web API returns the error message because action method is not like “Get()” as well as action method does not start with prefix other than “Get” so API could not find action method. We can see error messages as “The requested resource does not support HTTP method 'GET'” XML format looks like the following screenshot.