André Azevedo André Azevedo - 20 days ago 8
ASP.NET (C#) Question

Angular 2 http post null Web Api Core

I am implementing a new web application in angular 2, using an existing Web Api (ASP.NET Core), but i am having trouble with HTTP Post. After searching all kind of information, I still not abble to resolve this problem and my Web API still receiving null params from angular post.

I need to see what is wrong here.
Here is my Angular 2 code:

posted(event) {
@Injectable()
export class httpTestComponent {

constructor(public http: Http) {

};

posted(event) {
var user: UserViewModel = {
name: "angularUser",
password: "pw",
email: "angularMail"
}
let pedido = JSON.stringify(user);

let headers = new Headers({ 'Content-Type': 'application/json' });
let options = new RequestOptions({ headers: headers });

this.http.post('http://localhost:10832/api/Account/Register', { pedido }, options)
.map(this.extractData).catch(this.handleError).subscribe();
};


ViewModel:

export interface UserViewModel {
name: string,
password: string,
email: string,


}

Web API:

[HttpPost]
[Route("Register")]
public void Register([FromBody] UserRegisterViewModel userVm)
{
}


ViewModel WEB API:

public class UserRegisterViewModel
{
public string name { get; set; }

public string password { get; set; }

public string email { get; set; }
}


Can someone tell me where Am I wrong?

Answer

There is no reason to add JSON.stringify(). Try removing it.

EDIT:

Either remove JSON.stringify() or remove the braces around body data:

this.http.post('http://localhost:10832/api/Account/Register', pedido, options)

Angular will try to serialize already serialized JSON string as an object, if you leave it this way and that's why you're having an issue.

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