Handling post is not working in controller

Question

0.00/5 (No votes)

See more:

Simples asp .net web api project, default controller, simplest possible POST handler:

[HttpPost]
        public void Post([FromBody]string value)
        {
            int a = 0;
        }

Sending simple post request with Postman to:

http://localhost:port/api/values

I can only send raw data of type application/json - sending anything else results in controller action not getting executed at all, but no matter what I am sending,

value

in the handler is always null. Can someone point out what I am doing wrong?

What I have tried:

I have tried, like, everything that I'm aware of.

Posted 22-Feb-18 9:36am

csrss

Updated 23-Feb-18 4:09am

v2

Add a Solution

2 solutions

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

csrss · Accepted Answer · 2018-02-22T09:45:00

Solution 1

Ok, figured out it myself. To send a simplest possible string, it has to be wrapped in quotes. How obvious was it.

Posted 22-Feb-18 9:45am

csrss

v2

Richard Deeming · Accepted Answer · 2018-02-23T04:09:00

By default, WebAPI only binds to JSON or XML requests (or the formats supported by whatever other media formatters you have configured). Wrapping the string in quotes will effectively turn it into a JSON payload, but you'll need to watch out for encoding issues, particularly if your string already contains quotes.

If you just want to capture the raw request body, there are other ways to do that:
Accepting Raw Request Body Content with ASP.NET Web API - Rick Strahl's Web Log[^]

The simplest option is probably:

C#

[HttpPost]
public async Task Post()
{
    string rawRequestBody = await Request.Content.ReadAsStringAsync();
    ...
}