Receiving JSON data back from HTTP request

Question

I have a web request that is working properly  but it is just returning the status OK  but I need the object I am asking for it to return  I am not sure how to get the json value I am requesting  I am new to using the object HttpClient  is there a property I am missing out on  I really need the returning object  Thanks for any help  Making the call - runs fine returns the status OK   HttpClient client   new HttpClient    client DefaultRequestHeaders Accept    Add new MediaTypeWithQualityHeaderValue  application json     var responseMsg   client GetAsync string Format  http   localhost 5057 api Photo    Result    The api get method    Cut out alot of code but you get the idea public string Get         return JsonConvert SerializeObject returnedPhoto

User · Answer

It s working fine for me by the following way -  public async Task lt object gt  TestMethod TestModel model                try                       var apicallObject   new                               Id  model Id                  name  model Name                             if  apicallObject    null                                var bodyContent   JsonConvert SerializeObject apicallObject                   using  HttpClient client   new HttpClient                                          var content   new StringContent bodyContent ToString    Encoding UTF8   application json                        content Headers ContentType   new MediaTypeHeaderValue  application json                        client DefaultRequestHeaders Add  access-token    token       token   access token                     var response   await client PostAsync  url  content       url  api endpoint url                     if  response    null                                                var jsonString   await response Content ReadAsStringAsync                             try                                                       var result   JsonConvert DeserializeObject lt TestModel2 gt  jsonString      TestModel2   deserialize object                                                   catch  Exception e                                 msg                             throw e                                                                                                    catch  Exception ex                        throw ex                    return null

User · Answer

I think the shortest way is   var client   new HttpClient    string reqUrl     http   myhost mydomain com api products  ProdId    var prodResp   await client GetAsync reqUrl   if   prodResp IsSuccessStatusCode       FailRequirement      var prods   await prodResp Content ReadAsAsync lt Products gt

User · Answer

Install this nuget package from Microsoft System Net Http Json  It contains extension methods   Then add using System Net Http Json  Now  you ll be able to see these methods      So you can now do this   await httpClient GetFromJsonAsync lt IList lt WeatherForecast gt  gt   weatherforecast     Source  https   www stevejgordon co uk sending-and-receiving-json-using-httpclient-with-system-net-http-json

User · Answer

Building on  Panagiotis Kanavos  answer  here s a working method as example which will also return the response as an object instead of a string   using System Text  using System Net Http  using System Threading Tasks  using Newtonsoft Json     Nuget Package  public static async Task lt object gt  PostCallAPI string url  object jsonObject        try               using  HttpClient client   new HttpClient                          var content   new StringContent jsonObject ToString    Encoding UTF8   application json                var response   await client PostAsync url  content               if  response    null                                var jsonString   await response Content ReadAsStringAsync                    return JsonConvert DeserializeObject lt object gt  jsonString                                     catch  Exception ex                myCustomLogger LogException ex             return null      Keep in mind that this is only an example and that you d probably would like to use HttpClient as a shared instance instead of using it in a using-clause

User · Answer

If you are referring to the System Net HttpClient in  NET 4 5  you can get the content returned by GetAsync using the HttpResponseMessage Content property as an HttpContent-derived  object  You can then read the contents to a string using the HttpContent ReadAsStringAsync method or as a stream using the ReadAsStreamAsync method   The HttpClient class documentation includes this example     HttpClient client   new HttpClient      HttpResponseMessage response   await client GetAsync  http   www contoso com       response EnsureSuccessStatusCode      string responseBody   await response Content ReadAsStringAsync

User · Answer

What I normally do  similar to answer one    var response   await httpClient GetAsync completeURL      http   192 168 0 1 915 api Controller Object  if  response IsSuccessStatusCode    true                string res   await response Content ReadAsStringAsync            var content   Json Deserialize lt Model gt  res       do whatever you need with the JSON which is in  content     ex  int id   content Id           Navigate            return true            else               await JSRuntime Current InvokeAsync lt string gt   alert    Warning  the credentials you have entered are incorrect             return false          Where  model  is your C  model class

[c#] Receiving JSON data back from HTTP request

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