static string clientId = "";        
static string clientSecret = "";        
static string scope = "";           
static string username = "";        
static string password = "";        
static string baseUrl = "";

RestClient client = new RestClient(baseUrl);            
RestRequest request = new RestRequest() { Method = Method.POST };            
request.AddHeader("Content-Type", "application/x-www-form-urlencoded");            
request.AddParameter("state", "init");            
request.AddParameter("grant_type", "password");            
request.AddParameter("scope", scope);            
request.AddParameter("username", username);            
request.AddParameter("password", password);            
request.AddParameter("client_id", clientId);            
request.AddParameter("client_secret", clientSecret);            
IRestResponse token = client.Execute(request);

m_token tokenModel = JsonConvert.DeserializeObject<m_token>(token.Content);