ASP.NET Web API With Fiddler And Postman

The two lines given above make APIs which are only JSON supported. Hence, by default, now our API will support only JSON Media type format.

Now, our API is ready. Just add the connection string given below to the API’s web.config file.

Press Ctrl + F5 and navigate to http://localhost:26317/api/products. You will see the details of the product table in JSON format, as shown below.

Now, as per the agenda of this article, we will install Fiddler tool and Postman tool to test API functionality.

Using Fiddler to test Web Api

Step 1

Download Fiddler from the URL given below in the screenshot.

Install the downloaded EXE file and run it.

Step 2

First, we will check GET functionality. Thus, follow the steps shown in the screenshot given below and you will get the result in JSON format.

Step 2

Now, we will test POST (Insert) functionality.

Now, the data is inserted on 12th row.

Step 3

Now, we will update the data on 12th ID, using PUT functionality.

Now, the data is updated successfully.

Step 4

Now, we will delete the 12th record.

Using Fiddler to just test if the Web API functionality looks complicated, so instead of using Fiddler, we can use Postman (Google Chrome Extension).

Using Postman to test Web Api

Step 1

Install Postman app in Google Chrome Browser, as shown below.

Step 2

Run Postman app from the apps option in Google Chrome Browser. Thus, now test GET functionality.

Step 3

Test POST functionality.

The record is inserted at 13th row.

Step 4

Test PUT functionality.

Hence, the data is updated in the database.

Step 5

Finally, test Delete functionality.

Conclusion

Personally, I like using Postman to test Web API’s and WCF Services. We can also use Fiddler, but if API is too complex, I recommend using Fiddler, as it gives more flexibility to test the Services.

I hope you liked the above tutorial. If so, comment with your compliments and queries. I will try to reply asap.