Jerome Holasca Jerome Holasca - 1 year ago 98
C# Question

Webrequest c# API null once reached the API

I am trying to send a request from server side to my API, here is my code from Server

var httpWebRequest = (HttpWebRequest)WebRequest.Create("http://localhost:59606/api/values/UserCheck");
httpWebRequest.ContentType = "application/json; charset=utf-8";
httpWebRequest.Method = "POST";
using (var streamWriter = new StreamWriter(httpWebRequest.GetRequestStream()))
string json = "{\"username\":\"User\"," +
"\"password\":\"Mypassword\"," +


var httpResponse = (HttpWebResponse)httpWebRequest.GetResponse();
using (var streamReader = new StreamReader(httpResponse.GetResponseStream()))
var result = streamReader.ReadToEnd();

May API code are below:

public bool UserCheck([FromBody]User value)
ContextType CT = ContextType.Domain;
if (value.logonfrom.Split('\\')[0] == "DOMAIN")
CT = ContextType.Domain;
}else if(value.logonfrom.Split('\\')[0] == "MACHINE")
CT = ContextType.Machine;
return false;

return CheckCredentials(value.username, value.password, CT,value.logonfrom.Split('\\')[1]);

when my request reach the Action of UserCheck, the value of

([FromBody]User value)

is null

my Class for the User is below

public class User
public string username { get; set; }
public string password { get; set; }
public string system { get; set; }
public string IP { get; set; }
public string logonfrom { get; set; }

BUT once i remove the logonfrom variable from json there is no error, i mean the parameter (value) successfully captures the content i sent.

Thanks in advance

Answer Source

use the following peace of code.

  string json = JsonConvert.SerializeObject(new { username = "afsa", password = "fsaf", system = "fsaf", ip = "fsf", logonfrom ="fsfsd"});
Recommended from our users: Dynamic Network Monitoring from WhatsUp Gold from IPSwitch. Free Download