Call api from mvc with post data having callback url asp.net mvc

Question

I need to post json data to an API through my mvc action.Data have a callback url(of my application) attribute on which url api return the response. But when i am unable to do. I am not getting what i should do. Please help Thanks

Sachin Singh · Answer

this is not possible with web api once the request is processed the web api have no connection with the client left, the client will need to again issue a get reuest. as far as i could understand your requirement you want to send some data from MVC Action A to web api Action A after some processing the the web api action A should return the result to MVC action B, and then MVC action B should do it's task. it is not possible, if you want that web api could send response to MVC action B and then how MVC processes it it is not in the scope then it is possible. public int MVCActionA( string CallbackURL) { try { if (ModelState.IsValid) { var getEmployee = client.PostAsJsonAsync( "api/Employee" , CallbackURL).Result; if (getEmployee.IsSuccessStatusCode) { return 1; } } return 0; } catch (Exception ex) { return 0; } } In web API public HttpResponseMessage Post([FromBody] string callbackURL) { try { var data= client.PostAsJsonAsync(callbackUrl, calculatedResult).Result; } catch (Exception ex) { return Request.CreateErrorResponse(HttpStatusCode.BadRequest, ex); } }

Rahul Lakshakar · Answer

Hi sachin, I have mentioned that the data has a callback url on which api after calculation will aslo post the data to me. That is my issue, how to do that.

Sachin Singh · Answer

you can use HttpClient or RestClient to post data to an address as shown below public class EmployeeController : Controller { // // GET: /Employee/ private readonly HttpClient client; private readonly string BaseUrl; public EmployeeController() { client = new HttpClient(); BaseUrl = ConfigurationManager.AppSettings[ "url" ]; client.BaseAddress = new Uri(BaseUrl); client.DefaultRequestHeaders.Accept.Add( new MediaTypeWithQualityHeaderValue( "application/json" )); } [HttpPost] public int AddEmployees(Employee employee) { try { if (ModelState.IsValid) { var getEmployee = client.PostAsJsonAsync( "api/Employee" , employee).Result; if (getEmployee.IsSuccessStatusCode) { return 1; } } return 0; } catch (Exception ex) { return 0; } } } https://www.sharpencode.com/article/WebApi/consuming-web-api-in-mvc-application