Want to win a PS4? Go Premium and enter to win our High-Tech Treats giveaway. Enter to Win

x
?
Solved

AJAX Timer Issue

Posted on 2010-11-12
3
Medium Priority
?
494 Views
Last Modified: 2012-05-10
I have an ASP.NET application that uses ajax, update panel, and a timer.  The page should load fully so that the user see's the please wait text/images.  Then a timer should execute a function one time.  Below is my code.  The issue is that I have a function called LoadQuestions.  It can take up to 15 seconds to update data through web services to a seperate application.  If I comment out loadquestions, the timer ticks, then the code executes fine.  If I leave loadquestions in the code, it seems to time out the ajax.  The remaining code executes, but then the page dies and the redirect doesnt complete.  Any ideas?

        //----------------------------------------------------------------------------------
        protected void Page_Load(object sender, EventArgs e)
        {
            Page.MaintainScrollPositionOnPostBack = true;
            ScriptManager.RegisterStartupScript(this, typeof(Page), "ScriptDoFocus", Utility.SCRIPT_DOFOCUS.Replace("REQUEST_LASTFOCUS", Request["__LASTFOCUS"]), true);

            if (!IsPostBack)
            {
                if (Session["KEY"] != null)
                {
                    Session["REDIRECT"] = null;
                    Timer1.Enabled = true;
                    Session["Timer"] = null;
                    Constit constit = (Constit)Session["KEY"];
                    constit.ProcessingError = null;
                    Session["KEY"] = constit;
                }
            }
            else
            {
                if(Session["Timer"] != null)
                    Timer1.Enabled = false;
            }

        }
        //----------------------------------------------------------------------------------
        private void ProcessOrder()
        {
            Utility utility = new Utility();
            PaymentProcessor payment = new PaymentProcessor();
            Constit constit = (Constit)Session["KEY"];
            string message = string.Empty;

            decimal price = constit.ExamPrice;
            if (constit.Reinstate)
                price = price + 200;

            int scTransNum;
            if (!payment.ProcessMeetingPurchase(constit.Constit_ID, constit.BillFirstName, constit.BillLastName, constit.MeetingUID, constit.Reinstate, price, "COMP", constit.CCNumber.Replace("-", ""), constit.CCExpDate, constit.SecurityCode, constit.BillStreet, constit.BillZipCode, constit.HomePhone, constit.EmailAddress, constit.ExamName, out scTransNum, out message))
            {
                constit.ProcessingError = "<b>Can Not Process Application</b><BR/> <Font Size=-1>" + message.Replace("meeting", "exam");
                Session["KEY"] = constit;
                string redirectURL = Page.ResolveClientUrl("process_payment.aspx");
                string script = "window.location = '" + redirectURL + "';";
                ScriptManager.RegisterStartupScript(this, typeof(Page), "RedirectTo", script, true);
            }
            else
            {
                utility.SendReceipt(constit.ExamPrice.ToString("C"), constit.Exam + " Exam", constit.EmailAddress, constit.CCNumber.Replace("-", "").Substring(constit.CCNumber.Replace("-", "").Length - 4, 4), constit.FirstName + " " + constit.LastName, constit.Constit_ID);
                LoadQuestions(constit, scTransNum);
                string redirectURL = Page.ResolveClientUrl("application_complete.aspx");
                string script = "window.location = '" + redirectURL + "';";
                ScriptManager.RegisterStartupScript(this, typeof(Page), "RedirectTo", script, true);
            } 
        }
        //----------------------------------------------------------------------------------
        private bool LoadQuestions(Constit constit, int scTransNum)
        {
            string error = string.Empty;
            if (constit.LoadQuestions(constit, scTransNum, out error))
            {
                return true;
            }
            else
                return false;
        }
        //-----------------------------------------------------------------------------
        protected void Timer1_Tick(object sender, EventArgs e)
        {
            Session["Timer"] = true;
            ProcessOrder();
        }
        //-----------------------------------------------------------------------------

Open in new window

0
Comment
Question by:Rowdyone52
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
3 Comments
 
LVL 16

Expert Comment

by:BurnieP
ID: 34128279
You can try and play with the AsyncPostBackTimeout  property of the ScriptManager.

<asp:ScriptManager ID="ScriptManager" runat="server" AsyncPostBackTimeout="120"></asp:ScriptManager>

The value is in seconds, so the above line would mean 2 minutes.

Try setting a reasonable value there and see if it helps you.
0
 

Accepted Solution

by:
Rowdyone52 earned 0 total points
ID: 34167593
I tried adjusting the AsycPostBackTimeout and it still had issues.  

I ended up using the RegisterAsyncTask method to call the function.  
0
 

Author Closing Comment

by:Rowdyone52
ID: 34195050
Found my own solution
0

Featured Post

[Webinar] Lessons on Recovering from Petya

Skyport is working hard to help customers recover from recent attacks, like the Petya worm. This work has brought to light some important lessons. New malware attacks like this can take down your entire environment. Learn from others mistakes on how to prevent Petya like worms.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

This article is for Object-Oriented Programming (OOP) beginners. An Interface contains declarations of events, indexers, methods and/or properties. Any class which implements the Interface should provide the concrete implementation for each Inter…
The article shows the basic steps of integrating an HTML theme template into an ASP.NET MVC project
In response to a need for security and privacy, and to continue fostering an environment members can turn to for support, solutions, and education, Experts Exchange has created anonymous question capabilities. This new feature is available to our Pr…
Despite its rising prevalence in the business world, "the cloud" is still misunderstood. Some companies still believe common misconceptions about lack of security in cloud solutions and many misuses of cloud storage options still occur every day. …
Suggested Courses

610 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question