Skip to main content

SESSION TIMEOUT

As we knew that its a very big problem specially when developers provide a very large entry page to users. It will be Irritating for users after entering all data & then session timeout occur. To prevent or avoid session timeout problem, there is no fixed or specific or direct way to handle. But one can handle this problem using javascript asynchronous call. But one thing keep in mind that time to execute the javacript method must be less than your session timeout time. Otherwise the method will not work. So, carefully set the time aganist IIS or web.config file session time. The cross-browser javascript method is given below:

01 <script language="javascript" type="text/javascript"
02 function Prevent_Session_Timeout() 
03
04 var callerurl = "Prevent_Session.aspx"; 
05   
06 if (window.XMLHttpRequest) 
07
08 xhttp = new XMLHttpRequest() 
09
10 else 
11
12 xhttp = new ActiveXObject("Microsoft.XMLHTTP") 
13
14 xhttp.open("POST", callerurl, true); 
15 xhttp.send(""); 
16   
17 window.setTimeout("Prevent_Session_Timeout();", 60000); 
18
19   
20 //Initial calling
21 Prevent_Session_Timeout(); 
22 </script>

Important Notes:
1. Just create an aspx page named Prevent_Session.aspx. Because this page will be internally called by the above javascript method without any reflection to user.
2. You must set the window.setTimeout time parameter which never exceed the session timeout time of your project.
3. Paste the code in your main master page so that you need not write the code for each aspx page.

Script Tested for the following browsers:
1. Internet Explorer (IE)
2. Mozilla Firefox
3. Opera
4. Google Chrome

Comments

Popular posts from this blog

JQuery lightbox image slideshow gallery in asp.net

Introduction: In this article I will explain how to create lightbox image slideshow in asp.net using JQuery. Description:  In previous post I explained about  Ajax SlideshowExtender sample  to display images slideshow. Now in this article I will explain how to create lightbox image slideshow in asp.net using JQuery. In many websites generally we will see different types of slideshows like whenever we click on image that is automatically open with lightbox effect and we have a chance to see all the remaining images by press next or previous options in slideshow. All these Slideshows are implemented by using JQuery plugins. After seen those slideshows I decided to write post to use JQuery plugins to implement beautiful slideshown in asp.net.  To implement this one I am using  previous post  insert and display images from folder based on imagepath in database  because in that post I explained clearly how to insert images into our project folder a...

Editing Child GridView in Nested GridView

Editing Child GridView in Nested GridView In this article we will explore how to edit child gridview in the nested gridview.   Let''s write some code. Step 1:  Add scriptmanager in the aspx page. < asp : ScriptManager   ID ="ScriptManager1"   runat ="server"   EnablePageMethods ="true"> </ asp : ScriptManager > Step 2:  Add below stylesheet for modal popup. < style   type ="text/css">        .modalBackground        {              background-color : Gray;              filter : alpha(opacity=80);              opacity : 0.5;       }        .ModalWindow        {     ...

Add Edit Update Records in GridView using Modal Popup in ASP.Net

Add Edit Update Records in GridView using Modal Popup in ASP.Net In this article, I’ll explain how to Add and Edit records in ASP.Net GridView control using ASP.Net AJAX Control Toolkit Modal Popup Extender. Database For this tutorial, I am using Microsoft’s NorthWind database. You can download it using the following link. Download Northwind Database Connection string Below is the connection string to connect to the database. < connectionStrings >     < add name = " conString "      connectionString = " Data Source=.\SQLExpress;database=Northwind;     Integrated Security=true " /> </ connectionStrings >   HTML Markup Below is the HTML Markup of the page. Below you will notice that I have placed a Script Manager and an ASP.Net Update Panel on the page. Inside the Update Panel I have placed an ASP.Net GridView Control along with a Modal Popup Extender that will be used to Add or...