Call outside Rest API from a function - The best overloaded method match for 'RestSharp.RestRequest.AddHeader(string, string)' has some invalid arguments

Kinetic ERP
, ,
1

Hi,

I am trying to call a rest API (outside) from a function. The POST call has a json payload which is nested. I am having hard time getting it to work. I have tried different ways and get the same error (Event viewer) as below.

Code:

url = $"https://actualurl.com/method";
client = new RestClient (url);
client.Timeout = -1;
request = new RestRequest (Method.POST);
request.AddHeader("Accept", "application/json");
request.AddHeader("content-type", "application/json");
request.AddHeader("Authorization", access_token);

/*
string jsonBody = @"
    {
    ""includeDetail"": true,
    ""Info"": [
      {
        ""Number"": {
          ""forNumber"": ""123456""
        }
      }
    ]
  }
    ";
*/

var trackingNumberInfo = new { trackingNumber = "733868333834"};
var trackingInfo = new { trackingInfo = trackingNumberInfo };
var bodyArray = new { includeDetailedScans = true, trackingInfo };

var jsonBody = JsonConvert.SerializeObject(bodyArray);

request.AddParameter("application/json", jsonBody, ParameterType.RequestBody);

var error = "";

try
{
	response = client.Execute (request);
}
catch (Exception ex)
{
	error = "Exception caught 2: {0}" + ex;
}
finally
{
	jsonValue = JsonConvert.DeserializeObject(response.Content);
	this.output = jsonValue.transactionId;
}

Error:

Exception:
Microsoft.CSharp.RuntimeBinder.RuntimeBinderException: The best overloaded method match for ‘RestSharp.RestRequest.AddHeader(string, string)’ has some invalid arguments

  • at CallSite.Target(Closure , CallSite , RestRequest , String , Object )*
  • at System.Dynamic.UpdateDelegates.UpdateAndExecuteVoid3[T0,T1,T2](CallSite site, T0 arg0, T1 arg1, T2 arg2)*

Any advice/guidance is much appreciated.

Thanks, SK.

2 
string access_token = "whatever";

string url = $"http://actualurl.com/method";

var client = new RestClient(url);
  client.Timeout = -1;

var request = new RestRequest(Method.POST);
  request.AddHeader("Accept", "application/json");
  request.AddHeader("content-type", "application/json");
  request.AddHeader("Authorization", access_token);
  
var trackingNumberInfo = new { trackingNumber = "733868333834"};
var trackingInfo = new { trackingInfo = trackingNumberInfo };
var bodyArray = new { includeDetailedScans = true, trackingInfo };

var jsonBody = JsonConvert.SerializeObject(bodyArray);

request.AddParameter("application/json", jsonBody, ParameterType.RequestBody);

var error = "";

try
{
  var response = client.Execute (request);
  dynamic jsonValue = JsonConvert.DeserializeObject(response.Content);
  this.output = jsonValue.transactionId;

}
catch (Exception ex)
{
  error = "Exception caught 2: {0}" + ex;
}
2 Likes
3

Thank you @klincecum. That worked like a charm.

Now, I have the response as a nested json value. I am null value error if I traverse.

jsonResponse = JsonConvert.DeserializeObject(response.Content);
var City = jsonResponse.output[0].city;

I am researching it.

Thanks again for your quick help!!
SK.

1 Like
4

Post the json and what you want out of it.

We can knock that out too.

5

Here it is:

{
    "transactionId": "A3c00f",
    "output": {
        "alerts": [
            {
                "code": "RESPONSE",
                "message": "This is a Response."
            }
        ],
        "completeTrackResults": [
            {
                "trackingNumber": "73860713834",
                "trackResults": [
                    {
                        "trackingNumberInfo": {
                            "trackingNumber": "73860713834",
                            "trackingNumberUniqueId": "12834~ADEG"
                        },
                        "lastUpdatedDestinationAddress": {
                            "city": "GREENWOOD",
                            "stateOrProvinceCode": "IN",
                            "countryName": "United States"
                        },
                        "goodsClassificationCode": "",
                        "returnDetail": {}
                    }
                ]
            }
        ]
    }
}

Error: Exception caught 2: {0}Microsoft.CSharp.RuntimeBinder.RuntimeBinderException: Cannot perform runtime binding on a null reference\r\n at CallSite.Target(Closure , CallSite , Object )\r\n at System.Dynamic.UpdateDelegates.UpdateAndExecute1[T0,TRet](CallSite site, T0 arg0)

Interested in getting lastUpdatedDestinationAddress.city.

Thanks, SK.

6 
//Add using Newtonsoft.Json.Linq; to your usings section


var response = client.Execute(request);
var jsonAsTokens = JToken.Parse(response.Content);
this.output = jsonAsTokens["transactionId"].Value<string>();

string city = jsonAsTokens["output"]["completeTrackResults"][0]["trackResults"][0]["lastUpdatedDestinationAddress"]["city"].Value<string>();
3 Likes
7

Thank you bunch, @klincecum. Works perfectly!!

-SK

1 Like