RestSharp Submit Request - Body with x-www-form-urlencoded values

Question

I use postman and make an api post request where I add the body with the key / values ​​x-www-form-urlencoded and works fine in the postman.

The problem occurs when I try to execute it from C # using the RestSharp package.

I tried the following code below but did not receive a response. I get the "BadRequest" invalid_client error.

public class ClientConfig { public string client_id { get; set; } = "value here"; public string grant_type { get; set; } = "value here"; public string client_secret { get; set; } = "value here"; public string scope { get; set; } = "value here"; public string response_type { get; set; } = "value here"; } public void GetResponse() { var client = new RestClient("api-url-here"); var req = new RestRequest("endpoint-here",Method.POST); var config = new ClientConfig();//values to pass in request req.AddHeader("Content-Type","application/x-www-form-urlencoded"); req.AddParameter("application/x-www-form-urlencoded",config,ParameterType.RequestBody); var res = client.Execute(req); return; } //Also tried this req.AddParameter("client_id",config.client_id,"application/x-www-form-urlencoded",ParameterType.RequestBody); req.AddParameter("grant_type",config.grant_type,"application/x-www-form-urlencoded",ParameterType.RequestBody); req.AddParameter("client_secret",config.client_secret,"application/x-www-form-urlencoded",ParameterType.RequestBody); req.AddParameter("scope",config.scope,ParameterType.RequestBody); req.AddParameter("response_type",config.response_type,"application/x-www-form-urlencoded",ParameterType.RequestBody); //tried this too var client = new RestClient("url-here"); var req = new RestRequest("endpointhere",Method.POST); var config = new ClientConfig(); req.AddBody(config); var res = client.Execute(req); 

Answer 1

It works for me, it was a generator from a postman

  var token = new TokenValidation() { app_id = CloudConfigurationManager.GetSetting("appId"), secret = CloudConfigurationManager.GetSetting("secret"), grant_type = CloudConfigurationManager.GetSetting("grant_type"), Username = CloudConfigurationManager.GetSetting("Username"), Password = CloudConfigurationManager.GetSetting("Password"), }; var client = new RestClient($"{xxx}{tokenEndPoint}"); var request = new RestRequest(Method.POST); request.AddHeader("content-type", "application/x-www-form-urlencoded"); request.AddParameter("application/x-www-form-urlencoded", $"app_id={token.app_id}&secret={token.secret}&grant_type={token.grant_type}&Username={token.Username}&Password={token.Password}", ParameterType.RequestBody); IRestResponse response = client.Execute(request); if (response.StatusCode != HttpStatusCode.OK) { Console.WriteLine("Access Token cannot obtain, process terminate"); return null; } var tokenResponse = JsonConvert.DeserializeObject<TokenValidationResponse>(response.Content);