Develop Reference

How can I Post parameter in httpClient where in postman use param

I want to post my parameter with HttpClient .
what is the Content in httpclient request body? I wrote it int the body part and when I run the project I get Error.
my code is:
string baseAddress = "https://WebServiceAddress";
Client.DefaultRequestHeaders.Authorization = new System.Net.Http.Headers.AuthenticationHeaderValue("Bearer", token);
HttpRequestMessage bodyRequest = new HttpRequestMessage(HttpMethod.Post, baseAddress)
bodyRequest.Content = new StringContent(JsonConvert.SerializeObject(Prescriptionrequest), Encoding.UTF8, "application/json");
var responseApi = Client.PostAsync(baseAddress, bodyRequest.Content, new System.Threading.CancellationToken(false));
what should be the format of bodyRequest.Content?

Use this code:
HttpClient client = new HttpClient();
var dictionary = new Dictionary<string, string>
{
{ "parameter0", "value0" },
{ "parameter1", "value1" }
};
var content = new FormUrlEncodedContent(dictionary);
var response = await client.PostAsync("https://WebServiceAddress", content);
var responseString = await response.Content.ReadAsStringAsync();

How to convert C# RestSharp to C# ASP.NET httpclient

below codes is the generated c# restsharp codes from postman. How can I convert it to c# asp.net mvc4 codes for httpclient. When trying to debug in VS, I always have error of bad request. This is for ebay api creating a shipping fulfillment. Tested in postman works with the codes below.
var client = new RestClient("https://api.ebay.com/sell/fulfillment/v1/order/23-00000-11313/shipping_fulfillment");
client.Timeout = -1;
var request = new RestRequest(Method.POST);
request.AddHeader("Content-Type", "application/json");
request.AddHeader("Content-Language", "en-US");
request.AddHeader("Accept-Language", "en-US");
request.AddHeader("Accept-Charset", "utf-8");
request.AddHeader("Accept", "application/json");
request.AddHeader("Authorization", "Bearer v^1.1#i^1#I^3#f^0#p^3#r^0#t^H4sIAAAAA==");
request.AddParameter("application/json", "{\"lineItems\":[{\"lineItemId\":\"10022882297723\",\"quantity\":1}],\"shippedDate\":\"2020-02-11T01:28:16.475Z\",\"shippingCarrierCode\":\"Couriers Please\",\"trackingNumber\":\"UHV3436755010009000000\"}", ParameterType.RequestBody);
IRestResponse response = client.Execute(request);
Console.WriteLine(response.Content);
Current codes in asp.net but having error bad request.
private HttpClient CreateHttpClient()
{
var client = new HttpClient();
ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12;
string baseAddress = WebApiBaseAddress;
if (string.IsNullOrEmpty(baseAddress))
{
throw new HttpRequestException("There is no base address specified in the configuration file.");
}
client.Timeout = new TimeSpan(0, 5, 59);
client.BaseAddress = new Uri(baseAddress);
client.DefaultRequestHeaders.Accept.Clear();
client.DefaultRequestHeaders.Add("Authorization", string.Format("Bearer {0}", _cred.eBayToken));
client.DefaultRequestHeaders.Add("Accept-Language", "en-US");
client.DefaultRequestHeaders.Add("Accept-Charset", "utf-8");
client.DefaultRequestHeaders.Add("Accept", "application/json");
client.DefaultRequestHeaders.Add("LegacyUse", "true");
return client;
}
public HttpResponseMessage PostHttpResponse(string requestUri, object data)
{
var stringPayload = JsonConvert.SerializeObject(data);
var httpContent = new StringContent(stringPayload, Encoding.UTF8, "application/json");
httpContent.Headers.ContentType = new MediaTypeHeaderValue("application/json");
httpContent.Headers.Add("Content-Language", "en-US");
httpContent.Headers.Add("Content-Encoding", "gzip");
using (var client = CreateHttpClient())
{
try
{
HttpResponseMessage response = client.PostAsJsonAsync(requestUri, httpContent).Result;
if (response.IsSuccessStatusCode)
{
return response;
}
else
{
GetErrorsResponse(response);
throw new HttpRequestException(string.Format("There was an exception trying to post a request. response: {0}", response.ReasonPhrase));
}
}
catch (HttpRequestException ex)
{
throw ex;
//return null;
}
}
}
Thank in advance for the help. It is very much appreciated.

How to call Rest API with Content and Headers in c#?

I am trying to call Rest API with content and headers in c#. Actually I am trying to convert to c# from Python code which is:
import requests
url = 'http://url.../token'
payload = 'grant_type=password&username=username&password=password'
headers = {
'Content-Type': 'application/x-www-form-urlencoded'
}
response = requests.request('POST', url, headers = headers, data = payload, allow_redirects=False)
print(response.text)
So far I am trying with:
HttpClient client = new HttpClient();
client.BaseAddress = new Uri(Url);
var tmp = new HttpRequestMessage
{
Method = HttpMethod.Post,
Content =
{
}
};
var result = client.PostAsync(Url, tmp.Content).Result;
}
I have no idea how to put from Python code Headers (Content-Type) and additional string (payload).

If you use RestSharp, you should be able to call your service with the following code snipped
var client = new RestClient("http://url.../token");
var request = new RestRequest(Method.POST);
request.AddHeader("content-type", "application/x-www-form-urlencoded");
request.AddParameter("application/x-www-form-urlencoded", "grant_type=password&username=username&password=password", ParameterType.RequestBody);
IRestResponse response = client.Execute(request);
var result = response.Content;
I based my answer on the anwser of this answer.

Here a sample I use in one of my apps:
_client = new HttpClient { BaseAddress = new Uri(ConfigManager.Api.BaseUrl),
Timeout = new TimeSpan(0, 0, 0, 0, -1) };
_client.DefaultRequestHeaders.Accept.Clear();
_client.DefaultRequestHeaders.Accept.Add(
new MediaTypeWithQualityHeaderValue("application/json"));
_client.DefaultRequestHeaders.Add("Bearer", "some token goes here");

using System.Net.Http;
var content = new StringContent("grant_type=password&username=username&password=password");
content.Headers.Add("Content-Type", "application/x-www-form-urlencoded");
client.PostAsync(Url, content);
Or use FormUrlEncodedContent without set header
var data = new Dictionary<string, string>
{
{"grant_type", "password"},
{"username", "username"},
{"password", "password"}
};
var content = new FormUrlEncodedContent(data);
client.PostAsync(Url, content);
If you write UWP application, use HttpStringContent or HttpFormUrlEncodedContent instead in Windows.Web.Http.dll.
using Windows.Web.Http;
var content = new HttpStringContent("grant_type=password&username=username&password=password");
content.Headers.Add("Content-Type", "application/x-www-form-urlencoded");
client.PostAsync(Url, content);
var data = new Dictionary<string, string>
{
{"grant_type", "password"},
{"username", "username"},
{"password", "password"}
};
var content = new FormUrlEncodedContent(data);
client.PostAsync(Url, content);

HttpClient sending parameter null

I'm trying to send data to an api with HttpClient but parameter I'm sending keeps received as 0.
What am I doing wrong here? It's my first usage of HttpClient so it's quite possible I mixed things or made some rookie mistake.
Path is correct, I can get results from Postman.
Code I'm using is this;
static async Task GetActivityList()
{
string uri = "/api/ExtraNet/GetActivityList";
HttpClient client = new HttpClient();
int SalesPersonId = 553;
string token = my token value is here;
client.BaseAddress = new Uri("http://localhost:16513/");
client.DefaultRequestHeaders.Accept.Clear();
client.DefaultRequestHeaders.Accept.Add(
new MediaTypeWithQualityHeaderValue("application/json"));
client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", token);
var postData = "{\"SalesPersonId=\":\""+SalesPersonId+"\"}";
var stringContent = new StringContent( "{\"SalesPersonId=\":\"" + SalesPersonId + "\"}", Encoding.UTF8, "application/json") ;
var content = new StringContent(postData, Encoding.UTF8, "application/json");
var response = await client.PostAsync("http://localhost:16513/api/ExtraNet/GetActivityList", stringContent);
var result = await response.Content.ReadAsStringAsync();
Console.WriteLine(result);
}

I managed to send the parameter this way
string uri = "/api/ExtraNet/GetActivityList";
HttpClient client = new HttpClient();
int SalesPersonId = 553;
string token = "";
client.BaseAddress = new Uri("http://localhost:16513/");
client.DefaultRequestHeaders.Accept.Clear();
client.DefaultRequestHeaders.Accept.Add(
new MediaTypeWithQualityHeaderValue("application/json"));
client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", token);
var stringContent = new FormUrlEncodedContent(new[] {
new KeyValuePair<string,string>("SalesPersonId","553")
});
var response = await client.PostAsync(uri, stringContent);
var result = await response.Content.ReadAsStringAsync();
Console.WriteLine(result);
Sending the parameters as FormUrlEncodedContent did the trick.

Same Rest Api returns Internal Server Error when using HttpClient

I'm sending a PUT request to a Rest url. If I do the following it works:
var client = new HttpClient()
{
BaseAddress = new Uri(#"https://myip:myport/"),
};
client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
using (HttpRequestMessage request = new HttpRequestMessage(HttpMethod.Put, uri))
{
request.Content = new StringContent(JsonConvert.SerializeObject(myobject), Encoding.UTF8, "application/json");
var response = await client.SendAsync(request);
response.EnsureSuccessStatusCode();
}
However, if I do the following I get an 500 Internal Server Error:
var client = new HttpClient()
{
BaseAddress = new Uri(#"https://myip:myport/"),
};
client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
using (HttpResponseMessage response = client.PutAsJsonAsync(uri, myobject).Result)
{
var r = response.EnsureSuccessStatusCode();
}
What might I be missing in the second snippet?