CODEWITHSUNDEEP
c#asp.net-web-api
Alexander
Alexander

Reputation: 20234

Processing POST form data in C# WebAPI

I am calling a C# WebAPI with the following request:

Request URL: https://devserver/myapp/api/SaveSettings?debug=0
Request Method:POST
Status Code:202 Accepted

Request Headers
...
Content-Type:application/x-www-form-urlencoded; charset=UTF-8
...

Form Data:
config:{"test":"test12"}

Response Headers:
...
Server: Microsoft-IIS/7.5
...

The WebAPI application code is 

public class SaveSettingsController : ApiController
{
    [System.Web.Http.HttpGet]
    [System.Web.Http.HttpPost]
    public HttpResponseMessage PostComplex(MyModel update)
    {
        if (ModelState.IsValid)
        {
            return Request.CreateResponse(HttpStatusCode.Accepted,update.config.test);
        }
    }
}

While the Status Code is sent correctly (which is why I came to believe that this code is really executed), the content is always null, and I don't know why. I also tried a model with config set to type string, and 

            return Request.CreateResponse(HttpStatusCode.Accepted,update.config);

but to no avail: it still returns null.

Why is this? What am I doing wrong?

Upvotes: 2

Views: 1893

Answers (3)

Kiran
Kiran

Reputation: 57989

You request content-type is application/x-www-form-urlencoded, but you are sending Json data. Either change your content-type to application/json or change the format of the request body data.

Upvotes: 1

Sundara Prabu
Sundara Prabu

Reputation: 2729

You dont have to create a response and all that complicated stuff, just return any value, it gets jsonized

Upvotes: 1

The Mahahaj
The Mahahaj

Reputation: 696

If you have a post parameter in web api you decorate it with the [FromBody] attribute like below:

    [System.Web.Http.HttpGet]
    [System.Web.Http.HttpPost]
    public HttpResponseMessage PostComplex([FromBody] MyModel update)
    {
        if (ModelState.IsValid)
        {
            return Request.CreateResponse(HttpStatusCode.Accepted,update.config.test);
        }
    }

Upvotes: 2

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