How to consume other API into our Webapi

Question

Sorry , I am new in web api actually when I am running my API on postman the response is correct.but when i am implementing in code its giving internal server code error. var gizmo = new Product() { ChannelId= "948404" }; HttpResponseMessage response = await client.PostAsJsonAsync("https: //xxx-xxxxxx-api.xxx.co/api/bills, , gizmo); if (response.IsSuccessStatusCode) { }

Rohit Rao · Answer

You can add headers like below: httpClient.DefaultRequestHeaders.Add( "HeaderKey" , "HeaderValue" ); You can also check how to user HttpClient in .net core (if you are using .net core) : https://www.c-sharpcorner.com/article/httpclientfactory-vs-httpclient-to-implement-api-calls/

Pradeep Rawat · Answer

Rohit, after getting a result into jsonstring variable. in next line while deserrilzie jsonstring it's giving error: "Message": "An error has occurred.", "ExceptionMessage": "Cannot deserialize the current JSON object (e.g. {\"name\":\"value\"}) into type 'System.Collections.Generic.List`1[BBPSAXISWEBAPIEntity.Entity.CategoriesList]' because the type requires a JSON array (e.g. [1,2,3]) to deserialize correctly." var jsonString = response.Content.ReadAsStringAsync().Result; List idList = JsonConvert.DeserializeObject >(jsonString);

Rohit Rao · Answer

If you know the type of your output then you can use it like this: response.Content.ReadAsAsync YourTypeHere >().Result; If you dont know the type then use dynamic and process the result response.Content.ReadAsAsync ().Result;

Pradeep Rawat · Answer

Rohit, Api running successfully. now how to get api data(json).. if (response.IsSuccessStatusCode) { ////how to get api data ..code? }

Pradeep Rawat · Answer

Hi rohit, 'thanks.. I forgot to pass required http headers. can you please share appropriate code for header and as well as for API. then next step is to return response data in List ..how to return it.

Rohit Rao · Answer

Hi Pradeep, Your code should be like below: HttpClient client = new HttpClient(); var gizmo = new Product() { ChannelId = "948404" }; HttpResponseMessage response = await client.PostAsJsonAsync( "https://xxx-xxxxxx-api.xxx.co/api/bills" , gizmo); if (response.IsSuccessStatusCode) { } Your api parameter (gizmo) should be the second parameter, third parameter is cancellation token. Check what all the required http headers you are passing or not.