CODEWITHSUNDEEP
asp.netasp.net-mvcasp.net-coreasp.net-core-webapiwebapi
User4179525
User4179525

Reputation: 526

Model is getting bound but not the individual parameters from json request body in ASP.NET Core Web API

Using postman, am trying to post "city" and "country" data.

URL: http://localhost:8080/api/Sample/SendData

RequestBody: {"city": "abc","country": "xyz"}

Headers: Content-Type: application/json

But am unable to retrieve the data instead getting nulls as show below. By encapsulating the properties (city, country) into a model, I am able to see the data.

enter image description here

Below is the code am using

[AllowAnonymous]
[ApiController]
public class SampleController : ControllerBase
{
    private readonly ILogger<SampleController> _logger;

    public SampleController(ILogger<SampleController> logger)
    {
        _logger = logger;
    }

    [HttpPost]
    [Route("api/Sample/SendData")]
    public ActionResult SendData(string city, string country)
    {
        try
        {
            if (ModelState.IsValid)
            {
                //return
                return Ok("Success");
            }
            else
            {
                throw new Exception("error");
            }
        }
        catch (Exception ex)
        {
            //return
            return BadRequest(Convert.ToString(ex));
        }
    }

}

Note: I want to send the data using request body and not through query string as the data am going to pass eventually be larger.

Upvotes: 0

Views: 380

Answers (1)

Jerdine Sabio
Jerdine Sabio

Reputation: 6130

It won't work with individual parameters. When you're using datatype json, the asp.net controller will always assume it's an object you're sending.

If you want individual parameters you could remove the json request header and replace it with text/plain and change your request body to key-value.

There's a similar question here but you would need to install newtonsoftjson nuget package. You'll only get 1 string though, which is the whole json file, then you'll be deserializing it to an object when it gets to the controller.

POST Json without model and Ajax

Upvotes: 1

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