ASP.NET

#region Save to Database
               using (MyDatabaseEntities dc = new MyDatabaseEntities())
               {
                   dc.Users.Add(user);
                   dc.SaveChanges();

                   //Send Email to User
                   SendVerificationLinkEmail(user.EmailID, user.ActivationCode.ToString());
                   message = "Registration successfully done. Account activation link " +
                       " has been sent to your email id:" + user.EmailID;
                   Status = true;
               }
               #endregion

    var smtp = new SmtpClient
    {
        Host = "smtp.gmail.com",
        Port = 587, //
        EnableSsl = true,
        DeliveryMethod = SmtpDeliveryMethod.Network,
        UseDefaultCredentials = false,
        Credentials = new NetworkCredential(fromEmail.Address, fromEmailPassword)
    };

    using (var message = new MailMessage(fromEmail, toEmail)
    {
        Subject = subject,
        Body = body,
        IsBodyHtml = true
    })

        smtp.Send(message);
}

System.Net.Mail.SmtpException HResult=0x80131500 Message=The SMTP server requires a secure connection or the client was not authenticated. The server response was: 5.5.1 Authentication Required. Learn more at Source=RegistrationAndLogin StackTrace: at RegistrationAndLogin.Controllers.UserController.SendVerificationLinkEmail(String emailID, String activationCode, String emailFor) in D:\Jobshop\RegistrationAndLogin\RegistrationAndLogin\Controllers\UserController.cs:line 224 at RegistrationAndLogin.Controllers.UserController.Registration(User user) in D:\Jobshop\RegistrationAndLogin\RegistrationAndLogin\Controllers\UserController.cs:line 59 at System.Web.Mvc.ActionMethodDispatcher.Execute(ControllerBase controller, Object[] parameters) at System.Web.Mvc.ReflectedActionDescriptor.Execute(ControllerContext controllerContext, IDictionary`2 parameters) at System.Web.Mvc.ControllerActionInvoker.InvokeActionMethod(ControllerContext controllerContext, ActionDescriptor actionDescriptor, IDictionary`2 parameters) at System.Web.Mvc.Async.AsyncControllerActionInvoker.<>c.<BeginInvokeSynchronousActionMethod>b__9_0(IAsyncResult asyncResult, ActionInvocation innerInvokeState) at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResult`2.CallEndDelegate(IAsyncResult asyncResult) at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResultBase`1.End() at System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeActionMethod(IAsyncResult asyncResult) at System.Web.Mvc.Async.AsyncControllerActionInvoker.AsyncInvocationWithFilters.<InvokeActionMethodFilterAsynchronouslyRecursive>b__11_0() at System.Web.Mvc.Async.AsyncControllerActionInvoker.AsyncInvocationWithFilters.<>c__DisplayClass11_1.<InvokeActionMethodFilterAsynchronouslyRecursive>b__2()

rotected void btn_nxt_Click(object sender, EventArgs e)
        {
            
            i++;
            s = er.scalarReturn("select min(q_id) from questions where q_id="+i);
          
            

            if (s.Equals(""))
            {

                MessageBox.Show("Quize Over");
                btn_nxt.Enabled = false;

            }
            else
            {
                i = Convert.ToInt32(s);
            lb_qs.Text = er.scalarReturn("select q_title from questions where q_id=" + i);
            lb_op1.Text = er.scalarReturn("select optiona from questions where q_id=" + i);
            lb_op2.Text = er.scalarReturn("select optionb from questions where q_id=" + i);
            lb_op3.Text = er.scalarReturn("select optionc from questions where q_id=" + i);
            lb_op4.Text = er.scalarReturn("select optiond from questions where q_id=" + i);
            }

        }

<script>ReactDOM.hydrate(React.createElement(CommentBox, {"initialData":[{"id":1,"author":"Daniel Lo Nigro","text":"Hello ReactJS.NET World!"},{"id":2,"author":"Pete Hunt","text":"This is one comment"},{"id":3,"author":"Jordan Walke","text":"This is *another* comment"}],"url":"/comments","submitUrl":"/comments/new","pollInterval":2000}), document.getElementById("react_0HLF3D2L0PCGB"));

<script>ReactDOM.hydrate(React.createElement(CommentBox, {"initialData":[{"Id":1,"Author":"Daniel Lo Nigro","Text":"Hello ReactJS.NET World!"},{"Id":2,"Author":"Pete Hunt","Text":"This is one comment"},{"Id":3,"Author":"Jordan Walke","Text":"This is *another* comment"}],"url":"/comments","submitUrl":"/comments/new","pollInterval":2000}), document.getElementById("react_0HLF3DH1L6U8N"));
</script>

How to use angular along with ASP.NET mvc project?

[AttributeUsageAttribute(AttributeTargets.Class | AttributeTargets.Method, Inherited = true, AllowMultiple = false)]
public class AdminSecurityCheckAttribute : ActionFilterAttribute, IActionFilter
{
    public override void OnActionExecuting(ActionExecutingContext filterContext)
    {
        var controller = filterContext.Controller as AdminController;
        var HttpContext = controller.HttpContext;

        if (HttpContext.Session.GetString("Admin_AccountName") != null)

DS = x.LoadBlueUploads(mynumber)

            Dim dr As DataRow
            dt = DS.Tables(0)
            For Each dr In dt.Rows

'not sure what code to put in here
               
            Next dr

Label1.Text += "<a href=""~/uploads/" + dr("FormUploadFileName").ToString() + """</a><br />"