[HttpPost]
        public void PostInsertDate([FromBody]ExpoRegistration ExpoRegistration)
        {
            string remoteUrl ="http://localhost:64995/Data.html";
            Big5OnlinePortalEntities db = new Big5OnlinePortalEntities();
            var date = db.ExpoRegistrations.FirstOrDefault(e => e.UserName == ExpoRegistration.UserName && e.Password == ExpoRegistration.Password);
            if (date == null)
            {
                Request.CreateErrorResponse(HttpStatusCode.NotFound, "Customer not found");
            }
            else
            {
                date.StartDate = DateTime.Today.Date;
                db.SaveChanges();
                Request.CreateResponse(HttpStatusCode.OK, date);
                if (date.StartDate <= date.EndDate)
                {
                    Request.CreateErrorResponse(HttpStatusCode.NotFound, "Customer not found");
                }
                else
                {
                    Redirect(remoteUrl);

                }
            }
        }

$(document).ready(function () {

            $('#linkClose').click(function () {
                $('#divError').hide('fade');
            });

            $('#btnLogin').click(function () {
                localStorage.setItem('username', document.getElementById('txtUsername').value);
                var loginData = {
                    grant_type: 'password',
                    username: $('#txtUsername').val(),
                    password: $('#txtPassword').val(),
                };
                var ExpoRegistration = {};
                ExpoRegistration.UserName = $('#txtUsername').val();
                ExpoRegistration.Password = $('#txtPassword').val();

                $.ajax({
                    // Post username, password & the grant type to /token
                    url: '/token',
                    headers: { "Accept": "application/json" },
                    method: 'POST',
                    contentType: 'application/json',
                    data: {
                        username: $('#txtUsername').val(),
                        password: $('#txtPassword').val(),
                        ClientId12: $('#ddlEventId').val(),
                        grant_type: 'password',

                    },
                    // When the request completes successfully, save the
                    // access token in the browser session storage and
                    // redirect the user to Data.html page. We do not have
                    // this page yet. So please add it to the
                    // EmployeeService project before running it
                    success: function (response) {
                        sessionStorage.setItem("accessToken", response.access_token);
                        //window.location.href = "Data.html";
                    },
                    // Display errors if any in the Bootstrap alert <div>
                    error: function (jqXHR) {
                        $('#divErrorText').text(jqXHR.responseText);
                        $('#divError').show('fade');
                    }
                });

                $.ajax({

                    url: 'http://localhost:64995/api/StartDate',
                    datatype: 'json',
                    type: 'POST',
                    data: ExpoRegistration,
                    headers: {
                        'Authorization': 'Bearer '
                            + sessionStorage.getItem("accessToken")
                    },
                    success: function (response) {
                        //window.location.href = "Data.html";
                        alert("Start Date Saved");
                    },
                    error: function (jqXHR) {
                        $('#divErrorText').text(jqXHR.responseText);
                        $('#divError').show('fade');
                    }
                });

            });
        });