HTTP Get, Put, Post And Delete Verbs In ASP.NET WEB API

Step 3

We are using Fiddler for monitoring Get, Put, Post, Update actions in Web API. We can download it for free from the URL “https://www.telerik.com/download/fiddler” and install it.

Now, build the project solution and run it. I am running URL http://localhost:51860/api/values/. Now, it will call Get action method in ValueController. Put a breakpoint and you can see which method calls in ValueControllers.

When we put above-mentioned output without the parameter, it automatically calls Get method in Web API. After returning an output, we can see the output as an XML, which is shown below.

If we pass index value of the list, we can get a particular string from the list. I am giving http://localhost:51860/api/values/1 so, it will return “ASP.NET” because it has an index value 1.


Step 4

Now, open Fiddler and using it, we can monitor POST, PUT and delete. First, run the Application and then copy http://localhost:51860/api/values URL past in Fiddler in composer tab, followed by clicking enter.

Now, double click the latest URL on the left side in Fiddler and you can view the result. This will show the type of result and request header details.

First, refresh the Application in the Browser. Now, go to composer tab, select GET in the drop-down list and click. Track the latest URL from the left side to composer tab. We can see all details like Host, Connection, Catch-Control, User-Agent and Accept details.

Now, add new string, using post HTTP verb, how to add and again get back from the list, using Fiddler.

Go to composer tab, select POST in the drop-down list and add new string or value in Request body and add Content-Type: application/JSON, followed by clicking Execute button in right side top.

Now, double click the latest URL on the left side of Fiddler and you can see the response of giving Post request in Fiddler. We can see the response is 204 No Content because post action method is void return type.

Now, we can check whether a string is added in a static variable. Now, select get request and delete added string in request body and click execute. Now, double click the latest one on the left side in Fiddler and you can see added string, which looks as shown below.

Now, we can update the last string in a static variable, using PUT HTTP verb in Fiddler. Now, select PUT from the dropdown in composer tab and the type where we want a new string to update the old string, followed by passing the index value to update the string in the URL and click execute button.

Now, refresh the page and get a new one on the left side of Fiddler. Double-click it and we can see the updated string in Fiddler.

Similarly, we can delete the string from a static variable. Similar to selecting Delete HTTP verb, pass an index value of the one, which needs to be deleted from a static variable. After clicking executes, it refreshes our application. For reference, view the screenshot given below.

Conclusion

This step by step article explained about Http verbs in Web API in ASP.NET. I hope it helps freshers and those who are learning ASP.NET Web API.