TSVCEO.CloudPrint.Util.OAuthTicket.FromAuthCode C# (CSharp) Method

        public static OAuthTicket FromAuthCode(string authcode, string clientid, string clientsecret, string redirecturi)
        {
            var req = HTTPHelper.CreateRequest(null, OAuthTokenRequestUri);
            var reqdata = new
            {
                code = authcode,
                client_id = clientid,
                client_secret = clientsecret,
                redirect_uri = redirecturi,
                grant_type = "authorization_code"
            };

            var respdata = HTTPHelper.ToJson(HTTPHelper.SendUrlEncodedPostData(req, reqdata));

            return new OAuthTicket
            {
                ClientId = clientid,
                ClientSecret = clientsecret,
                RedirectUri = redirecturi,
                _RefreshToken = respdata.refresh_token,
                _AccessToken = respdata.access_token,
                _TokenType = respdata.token_type,
                AccessTokenExpires = DateTime.Now.Add(new TimeSpan((respdata.expires_in - 60) * 10000000))
            };
        }